ASTROSAT CZTI

Data Quality Report

Orbit 19928

Creation date: 2024-06-27T18:09:14.093692
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/AS1A05_227T01_9000002966_19928cztM0_level2.evt modeM0/AS1A05_227T01_9000002966_19928cztM0_level2_quad_clean.evt
Size (bytes)596,004,48092,880,000
Size568.4 MB 88.6 MB
Events in quadrant A3,068,064611,404
Events in quadrant B3,472,778609,363
Events in quadrant C5,909,223566,615
Events in quadrant D5,165,435577,318

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131911
B0141771
C0220771
D0195303

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6423500.778452%
B6423610.949712%
C64235218.111474%
D64225889.156026%

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 7498 6423 0 0 0.00% 0.00%
B 7498 6423 5 5 0.07% 0.08%
C 7498 6423 148 148 1.97% 2.30%
D 7497 6422 550 550 7.34% 8.56%

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 0 226 7073 39.24 797 781 160.3
A 3 137 5949 32.23 797 781 160.3
A 12 194 5884 31.83 797 781 160.3
B 3 112 93096 626.55 785 768 147.4
B 0 189 77455 520.41 785 768 147.4
B 0 197 76833 516.19 785 768 147.4
C 9 221 1897194 11205.49 734 738 169.2
C 3 233 679725 4011.89 734 738 169.2
C 4 254 331833 1956.32 734 738 169.2
D 7 38 1860336 10130.53 752 729 183.6
D 12 32 141115 764.78 752 729 183.6
D 1 52 109762 593.98 752 729 183.6

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