ASTROSAT CZTI

Data Quality Report

Orbit 20151113_P01_147T02_9000000098_level2

Creation date: 2017-10-31T16:36:08.483810
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1P01_147T02_9000000098cztM0_level2.evt modeM0/AS1P01_147T02_9000000098cztM0_level2_quad_clean.evt
Size (bytes)14,340,012,480842,808,960
Size13.4 GB 803.8 MB
Events in quadrant A88,574,4865,297,870
Events in quadrant B95,078,9605,352,160
Events in quadrant C152,526,5144,738,891
Events in quadrant D93,202,5594,999,427

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015220
B015220
C015220
D015220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01010
B01010
C01010
D01010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03165330
B03358420
C05097600
D03305820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A749455570.743212%
B7477110701.431036%
C749932341131.217580%
D7470517172.298374%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 85035 74959 2982 2982 3.51% 3.98%
B 85035 74785 4229 4229 4.97% 5.65%
C 85036 75008 30999 30999 36.45% 41.33%
D 85036 74721 5345 5345 6.29% 7.15%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 171 377391 64.33 22799 22961 5509.6
A 15 143 242410 39.83 22799 22961 5509.6
A 15 249 170702 26.82 22799 22961 5509.6
B 7 221 1296172 228.04 23655 23798 5579.6
B 5 191 1217074 213.86 23655 23798 5579.6
B 0 220 717088 124.25 23655 23798 5579.6
C 3 191 45684257 8031.94 20398 21145 5685.2
C 3 127 10524160 1847.43 20398 21145 5685.2
C 3 31 3381325 591.04 20398 21145 5685.2
D 0 25 6660452 1032.92 20741 21556 6427.3
D 1 84 2983169 460.78 20741 21556 6427.3
D 1 4 1981342 304.91 20741 21556 6427.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter