ASTROSAT CZTI

Data Quality Report

Orbit 20230620_A12_052T04_9000005700_level2

Creation date: 2023-06-22T15:32:06.797789
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A12_052T04_9000005700cztM0_level2.fits modeM0/AS1A12_052T04_9000005700cztM0_level2_quad_clean.evt
Size (bytes)789,600,960856,877,760
Size753.0 MB 817.2 MB
Events in quadrant A4,796,8485,269,887
Events in quadrant B4,562,6325,237,429
Events in quadrant C4,573,6724,937,888
Events in quadrant D3,908,7044,440,268

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03490
B03490
C03490
D03500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018100
B018100
C018090
D018100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01989640
B01891820
C01977670
D02779300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A884684730.534657%
B885065720.646284%
C8850625842.919576%
D88484898010.148727%

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 126833 88474 0 0 0.00% 0.00%
B 126834 88511 0 0 0.00% 0.00%
C 126833 87986 0 0 0.00% 0.00%
D 126833 88458 0 0 0.00% 0.00%

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 9 19 3927 8.79 1252 1175 312.9
A 7 110 3845 8.53 1252 1175 312.9
A 0 29 3799 8.39 1252 1175 312.9
B 2 9 4071 12.65 1208 1153 230.6
B 3 80 3358 9.56 1208 1153 230.6
B 2 8 3240 9.05 1208 1153 230.6
C 1 81 3774 8.59 1208 1133 307.4
C 1 80 3630 8.12 1208 1133 307.4
C 3 202 3611 8.06 1208 1133 307.4
D 7 3 2885 6.23 1120 1020 299.3
D 4 160 2857 6.14 1120 1020 299.3
D 15 46 2838 6.07 1120 1020 299.3

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