ASTROSAT CZTI

Data Quality Report

Orbit 44135

Creation date: 2024-06-27T22:59:36.859436
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/AS1A13_012T02_9000005950_44135cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44135cztM0_level2_quad_clean.evt
Size (bytes)444,873,600111,202,560
Size424.3 MB 106.1 MB
Events in quadrant A4,553,371736,691
Events in quadrant B3,595,834756,806
Events in quadrant C3,633,127728,892
Events in quadrant D4,136,046651,557

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188283
B0156123
C0158523
D0171743

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70691572.220965%
B70692032.871693%
C7069991.400481%
D70692533.579007%

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 7864 7071 9 9 0.11% 0.13%
B 7864 7071 86 86 1.09% 1.22%
C 7864 7071 16 16 0.20% 0.23%
D 7864 7071 124 124 1.58% 1.75%

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 10 83 1412100 8504.95 791 773 165.9
A 14 159 65733 391.46 791 773 165.9
A 13 6 16791 96.53 791 773 165.9
B 5 235 236437 1521.62 781 758 154.9
B 5 172 162682 1045.43 781 758 154.9
B 0 200 82290 526.4 781 758 154.9
C 1 241 316523 1726.69 773 776 182.9
C 14 96 169506 922.71 773 776 182.9
C 14 254 68515 370.44 773 776 182.9
D 5 235 266884 1370.68 767 743 194.2
D 2 249 136759 700.51 767 743 194.2
D 7 204 126354 646.92 767 743 194.2

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