ASTROSAT CZTI

Data Quality Report

Orbit 03921

Creation date: 2024-06-27T14:35:14.928137
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/AS1G05_172T01_9000000502_03921cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03921cztM0_level2_quad_clean.evt
Size (bytes)460,797,12057,640,320
Size439.5 MB 55.0 MB
Events in quadrant A3,881,863326,581
Events in quadrant B3,249,621334,904
Events in quadrant C2,880,802331,065
Events in quadrant D3,514,081311,719

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157153
B0136512
C0128592
D0148692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6314651.029458%
B6314811.282863%
C6314160.253405%
D63141191.884701%

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 7599 6315 21 21 0.28% 0.33%
B 7599 6315 45 45 0.59% 0.71%
C 7599 6315 0 0 0.00% 0.00%
D 7599 6315 106 106 1.39% 1.68%

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 8 15 686535 4459.01 758 741 153.8
A 0 118 207426 1343.86 758 741 153.8
A 13 251 30525 193.65 758 741 153.8
B 7 221 79805 541.28 771 753 146.0
B 4 170 66252 448.48 771 753 146.0
B 15 204 60939 412.1 771 753 146.0
C 13 61 6407 33.54 734 738 169.0
C 9 144 4164 20.27 734 738 169.0
C 10 65 3792 18.07 734 738 169.0
D 2 232 452140 2608.12 722 703 173.1
D 13 239 94381 541.21 722 703 173.1
D 12 233 41112 233.46 722 703 173.1

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
Veto Counter