ASTROSAT CZTI

Data Quality Report

Orbit 58888

Creation date: 2026-08-16T10:34:48.421842
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_004T07_9000006598_58888cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58888cztM0_level2_quad_clean.evt
Size (bytes)449,245,44097,750,080
Size428.4 MB 93.2 MB
Events in quadrant A3,277,490650,130
Events in quadrant B3,348,211691,168
Events in quadrant C4,384,299609,234
Events in quadrant D5,109,756552,241

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141762
B0144442
C0176192
D0197692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6558801.219884%
B65581392.119549%
C65583244.940531%
D65584637.060079%

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 7618 6559 25 25 0.33% 0.38%
B 7618 6559 41 41 0.54% 0.63%
C 7618 6559 284 284 3.73% 4.33%
D 7618 6559 409 409 5.37% 6.24%

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 15 233 248120 1354.1 740 721 182.7
A 14 238 92767 503.8 740 721 182.7
A 3 94 25966 138.17 740 721 182.7
B 5 185 98186 617.95 731 703 157.8
B 4 236 78668 494.23 731 703 157.8
B 0 171 74774 469.54 731 703 157.8
C 12 252 1318346 6781.6 706 700 194.3
C 4 5 139421 713.96 706 700 194.3
C 6 223 75607 385.53 706 700 194.3
D 12 110 1519972 7537.49 697 665 201.6
D 11 129 637949 3161.65 697 665 201.6
D 6 239 94344 464.75 697 665 201.6

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