ASTROSAT CZTI

Data Quality Report

Orbit 20240504_A13_068T07_9000006222_level2

Creation date: 2024-05-08T15:12:35.413087
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/AS1A13_068T07_9000006222cztM0_level2.fits modeM0/AS1A13_068T07_9000006222cztM0_level2_quad_clean.evt
Size (bytes)830,194,560891,005,760
Size791.7 MB 849.7 MB
Events in quadrant A4,877,1165,382,319
Events in quadrant B4,769,3045,518,175
Events in quadrant C4,806,6164,990,971
Events in quadrant D4,179,6804,590,778

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019220
B019220
C019220
D019220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03433070
B02246780
C02460550
D02509620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9484442624.493695%
B9485630643.230159%
C9484464166.764793%
D9485646054.854727%

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 104244 94849 0 0 0.00% 0.00%
B 104243 94844 0 0 0.00% 0.00%
C 104244 94541 0 0 0.00% 0.00%
D 104244 94391 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 7 110 4005 8.72 1272 1185 323.4
A 0 29 3809 8.11 1272 1185 323.4
A 0 30 3663 7.66 1272 1185 323.4
B 2 9 4514 13.29 1267 1204 249.0
B 2 8 3591 9.59 1267 1204 249.0
B 3 17 3404 8.84 1267 1204 249.0
C 3 202 3672 7.6 1271 1177 328.3
C 1 81 3636 7.49 1271 1177 328.3
C 1 80 3537 7.19 1271 1177 328.3
D 15 47 3097 6.05 1203 1091 331.8
D 12 6 3090 6.02 1203 1091 331.8
D 4 16 3057 5.92 1203 1091 331.8

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