ASTROSAT CZTI

Data Quality Report

Orbit 15710

Creation date: 2024-06-27T17:12:27.503314
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/AS1A04_198T01_9000002322_15710cztM0_level2.evt modeM0/AS1A04_198T01_9000002322_15710cztM0_level2_quad_clean.evt
Size (bytes)494,441,28083,678,400
Size471.5 MB 79.8 MB
Events in quadrant A3,620,537507,184
Events in quadrant B3,563,558515,064
Events in quadrant C3,633,567503,154
Events in quadrant D3,655,632495,302

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158352
B0153091
C0153891
D0159541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73711471.994302%
B7371781.058201%
C7371901.221001%
D7371680.922534%

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 7767 7373 59 59 0.76% 0.80%
B 7767 7373 1 1 0.01% 0.01%
C 7767 7373 1 1 0.01% 0.01%
D 7767 7373 33 33 0.42% 0.45%

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 13 248 282469 1610.64 861 841 174.9
A 9 143 21080 115.75 861 841 174.9
A 0 226 7583 38.56 861 841 174.9
B 3 209 46975 278.13 862 841 165.9
B 0 189 41770 246.75 862 841 165.9
B 5 236 26151 152.58 862 841 165.9
C 3 233 225025 1141.99 835 840 196.3
C 14 238 126686 641.05 835 840 196.3
C 9 54 12244 58.09 835 840 196.3
D 1 52 191753 865.76 844 823 220.5
D 5 51 120913 544.54 844 823 220.5
D 13 172 34304 151.82 844 823 220.5

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