ASTROSAT CZTI

Data Quality Report

Orbit 53351

Creation date: 2025-08-08T20:45:09.095717
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/AS1C09_011T08_9000006492_53351cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53351cztM0_level2_quad_clean.evt
Size (bytes)891,918,72059,921,280
Size850.6 MB 57.1 MB
Events in quadrant A3,278,043585,113
Events in quadrant B3,770,299609,744
Events in quadrant C14,098,102130,430
Events in quadrant D11,404,62970,226

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140031
B0153661
C0458551
D0379631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59901522.537563%
B59912424.039392%
C5991474679.218828%
D5991525487.698214%

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 6930 5990 95 95 1.37% 1.59%
B 6931 5991 121 121 1.75% 2.02%
C 6931 5991 4737 4737 68.35% 79.07%
D 6930 5990 3381 3381 48.79% 56.44%

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 15 174 279383 1757.81 635 619 158.6
A 3 78 129901 815.22 635 619 158.6
A 3 14 94731 593.44 635 619 158.6
B 10 247 225370 1696.04 623 603 132.5
B 1 255 206252 1551.78 623 603 132.5
B 0 171 165601 1245.03 623 603 132.5
C 1 241 8551304 105483.21 288 286 81.1
C 15 178 2470847 30476.22 288 286 81.1
C 15 224 873410 10770.64 288 286 81.1
D 2 62 10015494 152616.96 220 210 65.6
D 2 249 140262 2134.17 220 210 65.6
D 6 239 118670 1805.14 220 210 65.6

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