ASTROSAT CZTI

Data Quality Report

Orbit 54812

Creation date: 2025-11-15T06:06:30.958374
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_039T06_9000006526_54812cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54812cztM0_level2_quad_clean.evt
Size (bytes)727,704,000113,644,800
Size694.0 MB 108.4 MB
Events in quadrant A3,610,369791,957
Events in quadrant B5,871,884790,300
Events in quadrant C7,042,163714,378
Events in quadrant D9,759,122557,843

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173880
B0236990
C0269301
D0350480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8436150.177809%
B84366377.550972%
C84354895.797273%
D8435202624.018969%

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 8436 8436 2 2 0.02% 0.02%
B 8436 8436 520 520 6.16% 6.16%
C 8435 8435 449 449 5.32% 5.32%
D 8435 8435 1984 1984 23.52% 23.52%

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 5 240 36689 159.47 896 872 224.6
A 3 14 28976 125.13 896 872 224.6
A 6 161 18895 80.25 896 872 224.6
B 5 185 1307579 6986.58 862 831 187.0
B 1 207 475653 2538.66 862 831 187.0
B 7 0 293317 1563.79 862 831 187.0
C 9 38 2354277 9941.8 854 845 236.7
C 4 5 389340 1641.15 854 845 236.7
C 9 237 225678 949.78 854 845 236.7
D 15 94 5285437 24243.33 762 730 218.0
D 1 31 871288 3993.64 762 730 218.0
D 12 6 121311 553.16 762 730 218.0

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