ASTROSAT CZTI

Data Quality Report

Orbit 58492

Creation date: 2026-07-20T21:33:07.908642
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_044T04_9000006592_58492cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58492cztM0_level2_quad_clean.evt
Size (bytes)1,374,744,960278,009,280
Size1.3 GB 265.1 MB
Events in quadrant A10,452,3081,805,110
Events in quadrant B15,320,9811,911,305
Events in quadrant C10,056,4691,768,426
Events in quadrant D13,532,0381,572,441

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0445916
B0590323
C0442183
D0537283

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04000
B04000
C04000
D04000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A197357183.638206%
B1973511575.862681%
C197354912.487966%
D1973512986.577147%

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 20745 19738 243 243 1.17% 1.23%
B 20745 19738 392 392 1.89% 1.99%
C 20745 19738 169 169 0.81% 0.86%
D 20745 19738 881 881 4.25% 4.46%

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 10 17 657645 1190.64 2221 2161 550.5
A 10 143 436667 789.25 2221 2161 550.5
A 12 80 348504 629.1 2221 2161 550.5
B 5 172 4544125 9702.96 2176 2086 468.1
B 2 249 619040 1317.97 2176 2086 468.1
B 7 0 598184 1273.42 2176 2086 468.1
C 4 5 496378 840.09 2166 2146 588.3
C 14 254 248565 418.86 2166 2146 588.3
C 6 223 193420 325.13 2166 2146 588.3
D 3 12 2935208 4891.31 2134 2040 599.7
D 8 240 984882 1638.97 2134 2040 599.7
D 2 153 292089 483.68 2134 2040 599.7

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