ASTROSAT CZTI

Data Quality Report

Orbit 57892

Creation date: 2026-06-10T11:16:57.623018
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_125T11_9000006582_57892cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57892cztM0_level2_quad_clean.evt
Size (bytes)830,816,64093,096,000
Size792.3 MB 88.8 MB
Events in quadrant A5,204,061709,522
Events in quadrant B3,516,749773,740
Events in quadrant C4,440,484676,690
Events in quadrant D16,996,435124,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208500
B0162600
C0187870
D0556785

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76762523.282960%
B7676760.990099%
C76761251.628452%
D7675634782.697068%

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 7676 7676 199 199 2.59% 2.59%
B 7676 7676 24 24 0.31% 0.31%
C 7676 7676 106 106 1.38% 1.38%
D 7675 7675 6000 6000 78.18% 78.18%

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 7 64 2015661 10182.08 800 780 197.9
A 4 236 65828 328.72 800 780 197.9
A 10 251 18079 87.42 800 780 197.9
B 7 252 106577 619.6 802 771 170.8
B 10 247 97689 567.56 802 771 170.8
B 12 111 21642 122.22 802 771 170.8
C 15 224 897951 4223.68 786 779 212.4
C 14 254 228190 1070.6 786 779 212.4
C 12 252 103986 485.87 786 779 212.4
D 12 110 13642058 89449.51 536 511 152.5
D 2 120 593009 3885.09 536 511 152.5
D 8 160 508685 3332.17 536 511 152.5

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