ASTROSAT CZTI

Data Quality Report

Orbit 58834

Creation date: 2026-08-12T20:08:19.972549
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_106T01_9000006596_58834cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58834cztM0_level2_quad_clean.evt
Size (bytes)470,943,36095,359,680
Size449.1 MB 90.9 MB
Events in quadrant A4,605,572616,789
Events in quadrant B4,931,730641,774
Events in quadrant C3,220,290612,025
Events in quadrant D4,176,584569,175

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180431
B0189881
C0141051
D0167161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64164436.904613%
B641664710.084165%
C64161161.807980%
D64172193.412810%

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 7426 6418 241 241 3.25% 3.76%
B 7426 6418 301 301 4.05% 4.69%
C 7426 6418 46 46 0.62% 0.72%
D 7427 6419 72 72 0.97% 1.12%

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 13 248 1331379 7362.41 719 700 180.7
A 10 251 110811 609.22 719 700 180.7
A 15 233 95478 524.39 719 700 180.7
B 5 185 1377771 9253.7 695 670 148.8
B 2 247 166438 1113.91 695 670 148.8
B 4 236 154817 1035.82 695 670 148.8
C 6 223 110010 558.21 706 699 195.8
C 13 3 99140 502.7 706 699 195.8
C 6 13 72777 368.08 706 699 195.8
D 12 110 954015 4657.2 710 677 204.7
D 12 248 163342 794.64 710 677 204.7
D 7 222 57543 277.8 710 677 204.7

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