ASTROSAT CZTI

Data Quality Report

Orbit 58278

Creation date: 2026-07-06T10:14:26.064149
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_044T03_9000006588_58278cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58278cztM0_level2_quad_clean.evt
Size (bytes)383,624,64096,989,760
Size365.9 MB 92.5 MB
Events in quadrant A3,248,107628,569
Events in quadrant B3,418,669678,144
Events in quadrant C3,719,003605,429
Events in quadrant D3,306,929569,438

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142372
B0146652
C0158432
D0145012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6525761.164751%
B6525911.394636%
C65251452.222222%
D6524530.812385%

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 7630 6526 25 25 0.33% 0.38%
B 7630 6526 29 29 0.38% 0.44%
C 7630 6526 102 102 1.34% 1.56%
D 7629 6525 46 46 0.60% 0.70%

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 4 249 142166 793.55 711 690 178.3
A 4 238 87857 488.93 711 690 178.3
A 12 114 85562 476.05 711 690 178.3
B 4 206 200021 1325.34 704 678 150.4
B 10 247 84670 558.42 704 678 150.4
B 0 153 82000 540.67 704 678 150.4
C 13 3 497294 2619.54 687 681 189.6
C 15 204 287313 1511.93 687 681 189.6
C 6 223 187223 983.97 687 681 189.6
D 2 120 148778 757.09 684 652 195.7
D 3 47 108631 551.89 684 652 195.7
D 2 249 103473 525.53 684 652 195.7

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