ASTROSAT CZTI

Data Quality Report

Orbit 20190301_A05_212T07_9000002746_level2

Creation date: 2025-11-28T02:12:18.886004
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/AS1A05_212T07_9000002746cztM0_level2.fits modeM0/AS1A05_212T07_9000002746cztM0_level2_quad_clean.evt
Size (bytes)187,637,760194,693,760
Size178.9 MB 185.7 MB
Events in quadrant A1,144,6181,174,239
Events in quadrant B1,116,3501,193,495
Events in quadrant C1,131,0161,148,510
Events in quadrant D972,7341,061,727

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0416410
B0405530
C0399180
D0441960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191263111.626059%
B191262421.265293%
C191262821.474433%
D191265692.975008%

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 22976 19112 0 0 0.00% 0.00%
B 22976 19122 0 0 0.00% 0.00%
C 22975 19121 0 0 0.00% 0.00%
D 22976 19121 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 0 29 985 9.43 298 280 74.8
A 7 110 911 8.44 298 280 74.8
A 9 19 864 7.81 298 280 74.8
B 2 9 911 10.27 295 282 61.2
B 2 8 780 8.13 295 282 61.2
B 5 128 728 7.28 295 282 61.2
C 1 81 908 8.0 298 278 78.7
C 1 80 871 7.53 298 278 78.7
C 12 241 792 6.53 298 278 78.7
D 10 190 727 6.2 277 251 76.7
D 10 189 698 5.83 277 251 76.7
D 6 231 683 5.63 277 251 76.7

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