ASTROSAT CZTI

Data Quality Report

Orbit 20210110_A10_045T06_9000004108_level2

Creation date: 2025-12-19T16:18:30.529664
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/AS1A10_045T06_9000004108cztM0_level2.fits modeM0/AS1A10_045T06_9000004108cztM0_level2_quad_clean.evt
Size (bytes)1,977,721,9201,511,760,960
Size1.8 GB 1.4 GB
Events in quadrant A12,306,0348,423,608
Events in quadrant B11,646,3068,412,674
Events in quadrant C12,074,5308,129,632
Events in quadrant D10,429,9167,378,432

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03090
B03090
C03090
D03090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04335570
B04428540
C04176180
D05911980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039980
B039980
C039980
D039980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19612828041.429679%
B19612944682.278092%
C19612942012.141958%
D19612897864.989599%

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 227225 196098 0 0 0.00% 0.00%
B 227225 195994 0 0 0.00% 0.00%
C 227225 196072 0 0 0.00% 0.00%
D 227225 195990 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 0 29 11799 11.38 3206 3008 772.3
A 7 110 9738 8.71 3206 3008 772.3
A 0 30 9189 8.0 3206 3008 772.3
B 2 9 9301 10.73 3082 2943 592.7
B 5 128 7712 8.05 3082 2943 592.7
B 3 17 7681 7.99 3082 2943 592.7
C 1 80 9265 7.94 3188 2991 790.6
C 1 81 9220 7.88 3188 2991 790.6
C 12 241 8259 6.66 3188 2991 790.6
D 15 46 7458 6.05 2979 2724 781.9
D 7 3 7304 5.86 2979 2724 781.9
D 3 14 7201 5.73 2979 2724 781.9

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