ASTROSAT CZTI

Data Quality Report

Orbit 20180806_G08_032T01_9000002280_level2

Creation date: 2025-11-23T22:01:44.306952
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/AS1G08_032T01_9000002280cztM0_level2.fits modeM0/AS1G08_032T01_9000002280cztM0_level2_quad_clean.evt
Size (bytes)330,975,360305,481,600
Size315.6 MB 291.3 MB
Events in quadrant A1,997,6361,774,577
Events in quadrant B1,922,0521,790,084
Events in quadrant C1,956,7281,680,690
Events in quadrant D1,706,8541,565,011

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07220
B07220
C07220
D07220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0752200
B0747880
C0766690
D0780010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A355334161.170743%
B355333430.965300%
C355332100.591000%
D355334451.252357%

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 38943 35532 0 0 0.00% 0.00%
B 38943 35532 0 0 0.00% 0.00%
C 38943 35533 0 0 0.00% 0.00%
D 38943 35533 0 0 0.00% 0.00%

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 14 188 2091 12.39 518 484 129.7
A 0 29 1874 10.72 518 484 129.7
A 14 204 1736 9.65 518 484 129.7
B 2 9 1587 10.85 507 481 101.9
B 14 254 1301 8.05 507 481 101.9
B 2 8 1296 8.0 507 481 101.9
C 1 80 1489 7.44 516 478 135.8
C 1 81 1405 6.83 516 478 135.8
C 7 111 1345 6.38 516 478 135.8
D 3 14 1247 6.15 487 442 130.9
D 6 231 1243 6.12 487 442 130.9
D 6 67 1220 5.94 487 442 130.9

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