ASTROSAT CZTI

Data Quality Report

Orbit 57803

Creation date: 2026-06-04T11:20:36.338375
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_083T16_9000006580_57803cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57803cztM0_level2_quad_clean.evt
Size (bytes)532,820,16099,590,400
Size508.1 MB 95.0 MB
Events in quadrant A3,645,250665,944
Events in quadrant B4,404,699711,354
Events in quadrant C7,213,892556,828
Events in quadrant D3,913,858592,253

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160922
B0178472
C0263052
D0168082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70241652.349089%
B70242032.890091%
C7024113616.173121%
D70241672.377563%

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 7759 7024 56 56 0.72% 0.80%
B 7759 7024 41 41 0.53% 0.58%
C 7758 7023 956 956 12.32% 13.61%
D 7759 7024 133 133 1.71% 1.89%

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 10 251 706307 3838.77 741 721 183.8
A 3 14 41196 220.21 741 721 183.8
A 3 128 26463 140.05 741 721 183.8
B 4 80 1128780 7261.42 735 706 155.4
B 0 63 93213 595.47 735 706 155.4
B 10 247 50860 322.84 735 706 155.4
C 9 38 2715859 14473.64 689 680 187.6
C 15 224 1412538 7526.1 689 680 187.6
C 12 252 140343 744.49 689 680 187.6
D 8 160 662689 3253.46 719 685 203.5
D 8 240 88173 429.96 719 685 203.5
D 12 0 67862 330.14 719 685 203.5

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