ASTROSAT CZTI

Data Quality Report

Orbit 57804

Creation date: 2026-06-04T13:14:32.242570
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_57804cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57804cztM0_level2_quad_clean.evt
Size (bytes)652,305,600103,273,920
Size622.1 MB 98.5 MB
Events in quadrant A3,978,711719,489
Events in quadrant B4,512,675757,520
Events in quadrant C11,133,819463,341
Events in quadrant D3,918,275647,250

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175231
B0188651
C0384591
D0173871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77553454.448743%
B77554385.647969%
C7755305939.445519%
D77552463.172147%

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 7755 7755 23 23 0.30% 0.30%
B 7755 7755 23 23 0.30% 0.30%
C 7754 7754 2370 2370 30.56% 30.56%
D 7755 7755 56 56 0.72% 0.72%

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 466202 2258.68 845 824 206.0
A 3 14 194090 938.0 845 824 206.0
A 3 128 37961 180.24 845 824 206.0
B 4 80 925705 5216.16 835 800 177.3
B 10 247 52079 289.2 835 800 177.3
B 9 251 36309 200.26 835 800 177.3
C 9 38 6943716 35787.94 715 706 194.0
C 15 224 940371 4843.53 715 706 194.0
C 12 252 250752 1288.87 715 706 194.0
D 8 240 348827 1510.29 827 789 230.4
D 5 173 62008 265.65 827 789 230.4
D 3 12 54621 233.6 827 789 230.4

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