ASTROSAT CZTI

Data Quality Report

Orbit 58203

Creation date: 2026-07-02T09:51:04.389518
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_042T02_9000006586_58203cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58203cztM0_level2_quad_clean.evt
Size (bytes)701,205,12083,580,480
Size668.7 MB 79.7 MB
Events in quadrant A3,076,212618,081
Events in quadrant B5,604,921643,660
Events in quadrant C3,023,326587,513
Events in quadrant D13,745,518226,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141291
B0211601
C0138161
D0452434

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65231231.885635%
B65233885.948183%
C6523771.180438%
D6522423564.934069%

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 7423 6524 52 52 0.70% 0.80%
B 7423 6523 171 171 2.30% 2.62%
C 7423 6523 8 8 0.11% 0.12%
D 7422 6522 3925 3925 52.88% 60.18%

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 194638 1107.2 707 688 175.2
A 3 245 118825 674.4 707 688 175.2
A 4 3 10333 55.06 707 688 175.2
B 10 128 2544230 17083.78 691 665 148.9
B 7 252 70242 467.31 691 665 148.9
B 0 153 64141 426.33 691 665 148.9
C 12 252 156384 829.23 690 685 187.8
C 14 96 86565 457.38 690 685 187.8
C 6 223 44288 232.22 690 685 187.8
D 12 110 11168686 75418.34 522 499 148.1
D 7 222 271174 1827.86 522 499 148.1
D 8 240 74152 497.38 522 499 148.1

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