ASTROSAT CZTI

Data Quality Report

Orbit 20714

Creation date: 2024-06-27T18:18:41.464690
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_165T07_9000003062_20714cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20714cztM0_level2_quad_clean.evt
Size (bytes)438,681,60089,205,120
Size418.4 MB 85.1 MB
Events in quadrant A2,943,959604,214
Events in quadrant B3,269,914583,718
Events in quadrant C2,897,589558,210
Events in quadrant D3,778,946549,013

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122531
B0134571
C0121921
D0148551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5812941.617343%
B58131482.546018%
C58131111.909513%
D58133425.883365%

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 7062 5813 0 0 0.00% 0.00%
B 7063 5814 33 33 0.47% 0.57%
C 7063 5814 0 0 0.00% 0.00%
D 7063 5814 204 204 2.89% 3.51%

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 6836 39.35 765 749 154.7
A 3 137 5822 32.8 765 749 154.7
A 12 194 5609 31.42 765 749 154.7
B 7 220 249120 1756.26 743 726 141.4
B 3 64 58179 406.22 743 726 141.4
B 0 190 20598 140.5 743 726 141.4
C 14 238 114825 696.92 706 713 163.7
C 7 247 11451 65.58 706 713 163.7
C 3 233 11442 65.53 706 713 163.7
D 1 52 621994 3594.29 722 701 172.9
D 5 222 155343 894.63 722 701 172.9
D 1 239 104114 598.26 722 701 172.9

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