ASTROSAT CZTI

Data Quality Report

Orbit 21411

Creation date: 2024-06-27T18:27:31.399771
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/AS1T03_140T01_9000003160_21411cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21411cztM0_level2_quad_clean.evt
Size (bytes)541,261,440101,044,800
Size516.2 MB 96.4 MB
Events in quadrant A3,644,474659,205
Events in quadrant B3,606,524663,233
Events in quadrant C3,446,827638,672
Events in quadrant D5,211,618603,156

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150702
B0152042
C0148512
D0203142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7111690.970328%
B7110831.167370%
C71101051.476793%
D71103835.386779%

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 7746 7112 0 0 0.00% 0.00%
B 7745 7111 4 4 0.05% 0.06%
C 7745 7110 0 0 0.00% 0.00%
D 7745 7111 280 280 3.62% 3.94%

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 5 168 206510 1148.47 888 872 179.1
A 11 47 10456 53.53 888 872 179.1
A 13 254 9994 50.95 888 872 179.1
B 0 230 47802 280.08 880 858 167.6
B 0 189 43504 254.43 880 858 167.6
B 0 190 26654 153.9 880 858 167.6
C 14 238 131661 661.64 841 847 197.7
C 3 233 34610 170.77 841 847 197.7
C 13 61 5846 25.28 841 847 197.7
D 13 174 485586 2362.68 836 812 205.2
D 12 235 401199 1951.4 836 812 205.2
D 7 38 397971 1935.67 836 812 205.2

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