ASTROSAT CZTI

Data Quality Report

Orbit 57280

Creation date: 2026-04-30T07:28:32.829430
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_049T03_9000006570_57280cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57280cztM0_level2_quad_clean.evt
Size (bytes)419,443,20090,365,760
Size400.0 MB 86.2 MB
Events in quadrant A3,950,329588,817
Events in quadrant B3,333,073625,990
Events in quadrant C4,136,035537,737
Events in quadrant D3,579,534510,918

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164191
B0148681
C0171011
D0157141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6782811.194338%
B67831101.621701%
C67831942.860091%
D6783911.341589%

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 7686 7057 27 27 0.35% 0.38%
B 7687 7058 36 36 0.47% 0.51%
C 7687 7058 148 148 1.93% 2.10%
D 7687 7058 70 70 0.91% 0.99%

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 3 14 627462 3513.32 716 698 178.4
A 8 4 425098 2378.97 716 698 178.4
A 3 95 52427 289.97 716 698 178.4
B 5 185 186430 1216.37 709 682 152.7
B 10 247 161356 1052.18 709 682 152.7
B 0 199 49605 320.37 709 682 152.7
C 15 224 1113817 6016.2 685 677 185.0
C 14 254 89611 480.66 685 677 185.0
C 12 252 68013 363.93 685 677 185.0
D 8 240 384575 1962.0 688 656 195.7
D 3 224 205637 1047.55 688 656 195.7
D 12 191 71474 361.91 688 656 195.7

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