ASTROSAT CZTI

Data Quality Report

Orbit 27937

Creation date: 2024-06-27T19:46:11.862081
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_016T01_9000004034_27937cztM0_level2.evt modeM0/AS1A10_016T01_9000004034_27937cztM0_level2_quad_clean.evt
Size (bytes)598,360,32080,124,480
Size570.6 MB 76.4 MB
Events in quadrant A3,466,246515,839
Events in quadrant B3,748,589523,069
Events in quadrant C4,011,479491,815
Events in quadrant D6,479,405466,178

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140590
B0151610
C0161050
D0238440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61431121.823213%
B61441071.741536%
C61443165.143229%
D614478312.744141%

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 7433 6143 0 0 0.00% 0.00%
B 7434 6144 0 0 0.00% 0.00%
C 7434 6144 105 105 1.41% 1.71%
D 7434 6144 600 600 8.07% 9.77%

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 15 174 23780 130.17 892 878 175.9
A 13 254 8999 46.16 892 878 175.9
A 0 226 7889 39.85 892 878 175.9
B 10 245 257873 1581.39 874 856 162.5
B 0 183 22542 133.43 874 856 162.5
B 0 230 20287 119.56 874 856 162.5
C 2 16 330969 1697.56 845 857 194.5
C 3 233 184455 944.13 845 857 194.5
C 14 238 147242 752.77 845 857 194.5
D 1 52 2363551 11942.78 835 816 197.8
D 8 195 474686 2395.24 835 816 197.8
D 2 250 172420 867.4 835 816 197.8

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