ASTROSAT CZTI

Data Quality Report

Orbit 59135

Creation date: 2026-09-02T01:22:01.503861
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/AS1T05_264T01_9000006602_59135cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59135cztM0_level2_quad_clean.evt
Size (bytes)707,117,76085,754,880
Size674.4 MB 81.8 MB
Events in quadrant A4,019,261629,904
Events in quadrant B3,337,064702,792
Events in quadrant C3,188,919642,433
Events in quadrant D15,124,501167,141

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166842
B0143902
C0141042
D0492512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65052583.966180%
B65061171.798340%
C6506410.630188%
D6506485974.684906%

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 7560 6506 139 139 1.84% 2.14%
B 7561 6507 43 43 0.57% 0.66%
C 7561 6507 14 14 0.19% 0.22%
D 7560 6505 4821 4821 63.77% 74.11%

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 3 14 525024 2927.74 729 712 179.1
A 13 248 330506 1841.56 729 712 179.1
A 10 251 255940 1425.18 729 712 179.1
B 4 236 187925 1184.85 733 705 158.0
B 5 185 80897 507.51 733 705 158.0
B 5 236 80241 503.36 733 705 158.0
C 12 252 125252 624.15 727 722 199.5
C 5 250 96844 481.77 727 722 199.5
C 6 12 50839 251.19 727 722 199.5
D 12 1 12104112 120052.62 347 332 100.8
D 12 110 737710 7313.76 347 332 100.8
D 12 218 290666 2879.71 347 332 100.8

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