ASTROSAT CZTI

Data Quality Report

Orbit 15671

Creation date: 2024-06-27T17:11:54.836324
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/AS1T02_084T01_9000002318_15671cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15671cztM0_level2_quad_clean.evt
Size (bytes)438,736,32090,120,960
Size418.4 MB 85.9 MB
Events in quadrant A3,025,962576,723
Events in quadrant B3,226,848586,336
Events in quadrant C3,060,207566,883
Events in quadrant D3,537,231550,947

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133033
B0137202
C0131802
D0148812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6428480.746733%
B6428280.435594%
C6428480.746733%
D64281211.882390%

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 7489 6430 17 17 0.23% 0.26%
B 7489 6430 2 2 0.03% 0.03%
C 7489 6430 0 0 0.00% 0.00%
D 7489 6430 139 139 1.86% 2.16%

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 13 248 88369 572.43 760 746 153.1
A 13 210 9655 58.2 760 746 153.1
A 0 226 6727 39.07 760 746 153.1
B 0 189 74556 506.25 766 746 145.8
B 4 173 47746 322.36 766 746 145.8
B 4 80 44707 301.52 766 746 145.8
C 14 238 114155 667.82 731 736 169.8
C 3 233 84151 491.15 731 736 169.8
C 0 207 7101 37.47 731 736 169.8
D 1 52 688994 3851.52 731 710 178.7
D 2 234 27208 148.28 731 710 178.7
D 2 120 24814 134.88 731 710 178.7

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