ASTROSAT CZTI

Data Quality Report

Orbit 23635

Creation date: 2024-06-27T18:57:02.331829
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/AS1A07_147T01_9000003490_23635cztM0_level2.evt modeM0/AS1A07_147T01_9000003490_23635cztM0_level2_quad_clean.evt
Size (bytes)485,559,360106,070,400
Size463.1 MB 101.2 MB
Events in quadrant A3,395,138694,236
Events in quadrant B3,657,020722,349
Events in quadrant C3,439,222677,429
Events in quadrant D3,760,937653,356

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143052
B0151822
C0144192
D0158282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6663781.170644%
B66631101.650908%
C66631071.605883%
D6663991.485817%

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 8963 6664 13 13 0.15% 0.20%
B 8963 6663 11 11 0.12% 0.17%
C 8963 6663 0 0 0.00% 0.00%
D 8963 6664 42 42 0.47% 0.63%

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 12 96 67792 386.42 863 844 173.3
A 13 254 10666 56.69 863 844 173.3
A 3 137 7549 38.7 863 844 173.3
B 3 64 115288 688.56 871 850 166.2
B 0 189 63327 375.92 871 850 166.2
B 0 229 28414 165.85 871 850 166.2
C 14 238 133674 681.97 833 840 194.8
C 7 247 33163 165.95 833 840 194.8
C 10 91 12762 61.21 833 840 194.8
D 9 85 270985 1340.58 831 809 201.5
D 12 233 222300 1099.01 831 809 201.5
D 1 52 48221 235.25 831 809 201.5

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