ASTROSAT CZTI

Data Quality Report

Orbit 16720

Creation date: 2024-06-27T17:26:44.317387
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_059T04_9000002476_16720cztM0_level2.evt modeM0/AS1A05_059T04_9000002476_16720cztM0_level2_quad_clean.evt
Size (bytes)554,731,200129,591,360
Size529.0 MB 123.6 MB
Events in quadrant A4,253,603868,379
Events in quadrant B3,759,628900,318
Events in quadrant C4,504,777849,536
Events in quadrant D3,831,584843,281

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171683
B0154652
C0179582
D0160382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66493735.609866%
B66491011.519025%
C66491592.391337%
D66491081.624304%

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 7660 6651 275 275 3.59% 4.13%
B 7660 6651 20 20 0.26% 0.30%
C 7660 6651 51 51 0.67% 0.77%
D 7660 6651 76 76 0.99% 1.14%

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 15 174 1131780 7191.49 782 765 157.3
A 10 234 92406 582.69 782 765 157.3
A 9 143 15332 92.62 782 765 157.3
B 15 35 202409 1348.15 798 778 149.6
B 3 209 95075 630.49 798 778 149.6
B 7 220 94350 625.64 798 778 149.6
C 3 233 1142730 6582.13 754 759 173.5
C 0 207 258352 1484.72 754 759 173.5
C 14 238 118695 679.76 754 759 173.5
D 1 52 509635 2751.66 763 739 184.9
D 10 70 284505 1534.36 763 739 184.9
D 11 176 87663 470.01 763 739 184.9

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