ASTROSAT CZTI

Data Quality Report

Orbit 10091

Creation date: 2024-06-27T15:54:55.858268
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/AS1G07_072T01_9000001452_10091cztM0_level2.evt modeM0/AS1G07_072T01_9000001452_10091cztM0_level2_quad_clean.evt
Size (bytes)598,083,840100,684,800
Size570.4 MB 96.0 MB
Events in quadrant A3,925,850637,909
Events in quadrant B4,216,556633,339
Events in quadrant C4,066,607628,049
Events in quadrant D5,324,563557,283

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024169
B023867
C024271
D024577

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242576523
B0253557198
C0247536479
D03138910147

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207
B0217
C0207
D02411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8627480.556393%
B8536861.007498%
C8632830.961538%
D82681822.201258%

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 13709 9940 1 1 0.01% 0.01%
B 13716 9785 12 12 0.09% 0.12%
C 13715 9931 66 66 0.48% 0.66%
D 13707 9459 142 142 1.04% 1.50%

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 26821 126.64 1006 987 204.0
A 3 1 12420 56.05 1006 987 204.0
A 0 226 9209 40.31 1006 987 204.0
B 4 174 112994 583.55 1004 980 192.0
B 4 239 81528 419.63 1004 980 192.0
B 4 81 45081 229.75 1004 980 192.0
C 10 22 242204 1071.07 974 981 225.2
C 14 67 12659 51.85 974 981 225.2
C 13 61 7403 28.51 974 981 225.2
D 2 16 610373 2552.13 915 893 238.8
D 8 195 291240 1215.8 915 893 238.8
D 1 52 226611 945.17 915 893 238.8

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