ASTROSAT CZTI

Data Quality Report

Orbit 20190509_A05_101T05_9000002902_level2

Creation date: 2019-05-13T11:17:14.516480
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/AS1A05_101T05_9000002902cztM0_level2_bc.evt modeM0/AS1A05_101T05_9000002902cztM0_level2_quad_clean.evt
Size (bytes)644,221,440331,413,120
Size614.4 MB 316.1 MB
Events in quadrant A3,919,0182,208,838
Events in quadrant B4,224,3272,227,559
Events in quadrant C4,596,0722,126,866
Events in quadrant D5,400,0382,097,115

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04080
B04080
C04080
D04080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0404730
B0413630
C0424090
D0468230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20008640.319872%
B200081380.689724%
C200081450.724710%
D200085312.653938%

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 22393 20009 0 0 0.00% 0.00%
B 22393 20009 23 23 0.10% 0.11%
C 22393 20008 0 0 0.00% 0.00%
D 22393 20008 10 10 0.04% 0.05%

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 4 2 29956 131.22 1002 984 220.8
A 13 254 23916 103.87 1002 984 220.8
A 12 194 7347 28.82 1002 984 220.8
B 3 64 114881 584.73 1002 976 194.8
B 0 198 51511 259.42 1002 976 194.8
B 7 220 40559 203.2 1002 976 194.8
C 3 233 827197 3575.5 963 957 231.1
C 10 223 18641 76.53 963 957 231.1
C 0 207 18493 75.89 963 957 231.1
D 12 218 1086706 4625.68 984 947 234.7
D 12 233 147988 626.44 984 947 234.7
D 1 52 141107 597.13 984 947 234.7

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