ASTROSAT CZTI

Data Quality Report

Orbit 57383

Creation date: 2026-05-07T06:27:25.157174
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/AS1A14_102T01_9000006572_57383cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57383cztM0_level2_quad_clean.evt
Size (bytes)1,565,173,440323,671,680
Size1.5 GB 308.7 MB
Events in quadrant A10,663,5982,173,818
Events in quadrant B10,855,6942,318,276
Events in quadrant C20,696,0531,894,143
Events in quadrant D13,957,3521,843,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0491174
B0488773
C0777083
D0582933

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04620
B04620
C04620
D04620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A228071340.587539%
B228082711.188180%
C22808232710.202561%
D2280812905.655910%

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 25740 23089 8 8 0.03% 0.03%
B 25741 23090 71 71 0.28% 0.31%
C 25741 23090 2075 2075 8.06% 8.99%
D 25741 23090 1249 1249 4.85% 5.41%

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 12 712556 1177.82 2461 2407 602.9
A 10 248 198788 325.71 2461 2407 602.9
A 3 14 149293 243.62 2461 2407 602.9
B 0 216 228737 441.77 2428 2336 512.5
B 5 185 203213 391.97 2428 2336 512.5
B 4 201 193156 372.35 2428 2336 512.5
C 15 224 8990139 14633.96 2270 2250 614.2
C 8 7 853286 1385.65 2270 2250 614.2
C 14 254 821967 1334.65 2270 2250 614.2
D 15 93 2693996 4146.27 2296 2187 649.2
D 8 240 516949 792.9 2296 2187 649.2
D 3 12 398292 610.13 2296 2187 649.2

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