ASTROSAT CZTI

Data Quality Report

Orbit 56079

Creation date: 2026-02-09T19:36:03.694134
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_083T03_9000006548_56079cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56079cztM0_level2_quad_clean.evt
Size (bytes)653,935,680144,489,600
Size623.6 MB 137.8 MB
Events in quadrant A5,171,883944,622
Events in quadrant B4,799,5021,019,383
Events in quadrant C5,732,048897,237
Events in quadrant D7,693,502791,056

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234300
B0219560
C0248170
D0304870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104321541.476227%
B104321701.629601%
C104322041.955521%
D104337397.083293%

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 10432 10432 94 94 0.90% 0.90%
B 10432 10432 17 17 0.16% 0.16%
C 10432 10432 164 164 1.57% 1.57%
D 10433 10433 669 669 6.41% 6.41%

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 15 32 264429 970.73 1092 1064 271.3
A 0 8 223725 820.7 1092 1064 271.3
A 7 64 176126 645.25 1092 1064 271.3
B 2 249 143332 614.54 1083 1042 231.5
B 10 247 68466 291.2 1083 1042 231.5
B 9 254 65063 276.5 1083 1042 231.5
C 12 252 438951 1507.78 1066 1056 290.4
C 9 38 437633 1503.24 1066 1056 290.4
C 15 147 390617 1341.35 1066 1056 290.4
D 11 129 3120641 10769.82 1031 987 289.7
D 8 240 183526 630.17 1031 987 289.7
D 5 173 96259 328.9 1031 987 289.7

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