ASTROSAT CZTI

Data Quality Report

Orbit 25229

Creation date: 2024-06-27T19:15:16.893792
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_097T01_9000003692_25229cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25229cztM0_level2_quad_clean.evt
Size (bytes)521,628,48060,903,360
Size497.5 MB 58.1 MB
Events in quadrant A3,492,968362,157
Events in quadrant B3,516,925362,631
Events in quadrant C3,600,389343,289
Events in quadrant D4,770,839346,724

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142610
B0143140
C0145340
D0186300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6149991.610018%
B61501031.674797%
C61491542.504472%
D61493455.610668%

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 7474 6150 0 0 0.00% 0.00%
B 7475 6151 1 1 0.01% 0.02%
C 7474 6150 10 10 0.13% 0.16%
D 7474 6150 222 222 2.97% 3.61%

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 13 254 10146 52.12 904 890 177.6
A 0 226 7908 39.52 904 890 177.6
A 3 137 7308 36.14 904 890 177.6
B 12 111 18865 108.34 886 866 166.1
B 3 64 17244 98.59 886 866 166.1
B 11 111 16851 96.22 886 866 166.1
C 14 238 139906 709.37 850 859 196.0
C 2 16 103514 523.71 850 859 196.0
C 7 247 33290 165.45 850 859 196.0
D 10 70 524694 2295.4 855 840 228.2
D 1 52 497522 2176.34 855 840 228.2
D 8 195 233929 1021.34 855 840 228.2

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