ASTROSAT CZTI

Data Quality Report

Orbit 43792

Creation date: 2024-06-27T22:55:49.349106
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_018T01_9000005906_43792cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43792cztM0_level2_quad_clean.evt
Size (bytes)748,198,080108,616,320
Size713.5 MB 103.6 MB
Events in quadrant A4,741,724813,693
Events in quadrant B3,755,124862,201
Events in quadrant C9,321,870567,370
Events in quadrant D9,379,733597,183

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186482
B0152292
C0319902
D0323602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64303245.038880%
B64301852.877138%
C6430237636.951788%
D6430173827.029549%

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 7620 6431 128 128 1.68% 1.99%
B 7620 6431 20 20 0.26% 0.31%
C 7620 6430 2128 2128 27.93% 33.09%
D 7620 6431 1473 1473 19.33% 22.90%

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 987192 5864.22 827 813 168.2
A 15 223 452193 2683.54 827 813 168.2
A 13 248 80451 473.46 827 813 168.2
B 0 200 231580 1439.74 828 806 160.3
B 0 183 61068 375.96 828 806 160.3
B 7 205 40469 247.45 828 806 160.3
C 15 174 4712397 28289.1 721 726 166.6
C 15 190 727256 4362.12 721 726 166.6
C 15 158 445955 2673.18 721 726 166.6
D 12 33 3610922 18715.69 750 726 192.9
D 5 222 1651544 8558.04 750 726 192.9
D 12 2 230804 1192.75 750 726 192.9

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