ASTROSAT CZTI

Data Quality Report

Orbit 59062

Creation date: 2026-08-28T05:39:04.675619
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_004T02_9000006600_59062cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59062cztM0_level2_quad_clean.evt
Size (bytes)928,877,76066,225,600
Size885.8 MB 63.2 MB
Events in quadrant A2,957,901618,227
Events in quadrant B3,086,618653,721
Events in quadrant C12,602,851292,132
Events in quadrant D15,251,4033,426

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132911
B0137011
C0417311
D0495708

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6263300.479004%
B6264691.101533%
C6264347255.427842%
D6263623499.536963%

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 7313 6264 17 17 0.23% 0.27%
B 7314 6265 36 36 0.49% 0.57%
C 7314 6265 3362 3362 45.97% 53.66%
D 7312 6262 5519 5519 75.48% 88.13%

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 10 251 62052 369.08 681 665 166.3
A 13 248 56032 332.89 681 665 166.3
A 15 233 51952 308.36 681 665 166.3
B 4 171 119519 822.89 676 651 144.5
B 0 186 86280 592.78 676 651 144.5
B 4 236 58598 401.15 676 651 144.5
C 15 219 10233509 68611.17 544 539 149.1
C 6 223 73003 485.86 544 539 149.1
C 12 252 63723 423.64 544 539 149.1
D 12 1 14477560 487393.22 96 91 29.7
D 2 62 160553 5402.06 96 91 29.7
D 2 31 117628 3956.96 96 91 29.7

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

TCT plots

Parameter TCT0 TCT_healed
Tct