ASTROSAT CZTI

Data Quality Report

Orbit 19436

Creation date: 2024-06-27T18:02:53.004308
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/AS1A05_221T01_9000002888_19436cztM0_level2.evt modeM0/AS1A05_221T01_9000002888_19436cztM0_level2_quad_clean.evt
Size (bytes)605,105,28095,244,480
Size577.1 MB 90.8 MB
Events in quadrant A3,372,641615,445
Events in quadrant B3,433,822623,110
Events in quadrant C3,402,450601,564
Events in quadrant D7,655,579569,544

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140992
B0142562
C0142272
D0273613

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6811410.601967%
B6811360.528557%
C6811771.130524%
D6810110216.182085%

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 7881 6811 0 0 0.00% 0.00%
B 7881 6811 1 1 0.01% 0.01%
C 7881 6811 0 0 0.00% 0.00%
D 7880 6810 973 973 12.35% 14.29%

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 3 1 34114 192.36 864 847 172.9
A 13 254 9863 52.13 864 847 172.9
A 0 226 7561 38.82 864 847 172.9
B 0 198 30152 181.92 852 830 161.2
B 0 197 22374 133.66 852 830 161.2
B 12 111 19429 115.39 852 830 161.2
C 14 238 130829 671.28 827 835 193.7
C 3 233 38636 195.2 827 835 193.7
C 9 221 7106 32.38 827 835 193.7
D 7 238 4614447 23965.39 802 781 192.5
D 2 234 26669 134.47 802 781 192.5
D 14 226 7866 36.8 802 781 192.5

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