ASTROSAT CZTI

Data Quality Report

Orbit 26508

Creation date: 2024-06-27T19:29:54.036457
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/AS1C05_017T01_9000003836_26508cztM0_level2.evt modeM0/AS1C05_017T01_9000003836_26508cztM0_level2_quad_clean.evt
Size (bytes)710,856,000114,125,760
Size677.9 MB 108.8 MB
Events in quadrant A3,774,261754,378
Events in quadrant B4,799,529755,634
Events in quadrant C4,132,478730,311
Events in quadrant D8,310,462690,180

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158470
B0189710
C0169320
D0299040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7561811.071287%
B75613044.020632%
C75611852.446766%
D7561181123.951858%

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 7761 7564 0 0 0.00% 0.00%
B 7761 7562 17 17 0.22% 0.22%
C 7761 7563 1 1 0.01% 0.01%
D 7761 7563 1488 1488 19.17% 19.67%

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 14068 65.77 976 958 199.3
A 6 16 10895 49.85 976 958 199.3
A 3 137 8798 39.33 976 958 199.3
B 0 189 695863 3771.63 965 945 184.2
B 7 205 265927 1438.17 965 945 184.2
B 12 111 21786 113.11 965 945 184.2
C 3 233 282322 1268.03 936 944 221.9
C 14 238 149789 670.77 936 944 221.9
C 4 254 23767 102.85 936 944 221.9
D 1 52 4820609 22683.94 843 825 212.5
D 12 233 224860 1054.4 843 825 212.5
D 2 234 30254 138.51 843 825 212.5

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