ASTROSAT CZTI

Data Quality Report

Orbit 59031

Creation date: 2026-08-27T22:26:06.327466
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_004T02_9000006600_59031cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59031cztM0_level2_quad_clean.evt
Size (bytes)689,598,72089,991,360
Size657.7 MB 85.8 MB
Events in quadrant A4,082,309655,441
Events in quadrant B5,109,298665,526
Events in quadrant C10,023,442362,529
Events in quadrant D5,782,405565,940

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167842
B0199485
C0342442
D0218862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68192103.079630%
B68185708.360223%
C6818316846.465239%
D68185938.697565%

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 7719 6820 120 120 1.55% 1.76%
B 7718 6819 392 392 5.08% 5.75%
C 7718 6819 2951 2951 38.24% 43.28%
D 7718 6819 501 501 6.49% 7.35%

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 787382 4290.88 737 720 183.3
A 10 251 122608 664.84 737 720 183.3
A 3 14 121268 657.53 737 720 183.3
B 2 249 1162122 7470.24 721 695 155.5
B 4 236 666588 4282.99 721 695 155.5
B 4 171 147216 942.42 721 695 155.5
C 15 219 7171443 44440.12 580 573 161.4
C 15 198 232251 1435.78 580 573 161.4
C 1 16 160194 989.22 580 573 161.4
D 12 1 1780466 8954.59 702 671 198.8
D 2 120 271510 1362.66 702 671 198.8
D 12 110 226757 1137.5 702 671 198.8

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