ASTROSAT CZTI

Data Quality Report

Orbit 58612

Creation date: 2026-07-28T21:31:22.733834
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_004T06_9000006594_58612cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58612cztM0_level2_quad_clean.evt
Size (bytes)831,525,120152,988,480
Size793.0 MB 145.9 MB
Events in quadrant A5,305,5071,039,186
Events in quadrant B6,962,3881,044,148
Events in quadrant C11,719,238880,763
Events in quadrant D5,970,489932,284

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231152
B0279992
C0422292
D0253652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106261381.298701%
B106276516.125906%
C10627149414.058530%
D106272712.550108%

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 12586 10628 19 19 0.15% 0.18%
B 12587 10629 348 348 2.76% 3.27%
C 12587 10629 1499 1499 11.91% 14.10%
D 12587 10629 141 141 1.12% 1.33%

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 13 248 343921 1189.8 1165 1134 288.1
A 4 249 180748 623.43 1165 1134 288.1
A 10 251 75765 259.04 1165 1134 288.1
B 6 255 904644 3820.72 1117 1077 236.5
B 8 234 644689 2721.51 1117 1077 236.5
B 2 249 363091 1530.77 1117 1077 236.5
C 15 217 5774092 19478.12 1085 1074 296.4
C 15 164 1006243 3391.43 1085 1074 296.4
C 12 252 366379 1232.54 1085 1074 296.4
D 2 249 540353 1668.0 1133 1082 323.3
D 7 222 380305 1172.96 1133 1082 323.3
D 8 240 223524 688.03 1133 1082 323.3

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