ASTROSAT CZTI

Data Quality Report

Orbit 24582

Creation date: 2024-06-27T19:07:33.316844
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/AS1T03_183T01_9000003610_24582cztM0_level2.evt modeM0/AS1T03_183T01_9000003610_24582cztM0_level2_quad_clean.evt
Size (bytes)858,168,000128,272,320
Size818.4 MB 122.3 MB
Events in quadrant A3,500,310899,019
Events in quadrant B3,834,751909,963
Events in quadrant C13,341,402712,512
Events in quadrant D4,799,074832,531

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155311
B0164261
C0449161
D0194451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7613220.288979%
B7614791.037562%
C7614370748.686630%
D7614660.866824%

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 7878 7614 0 0 0.00% 0.00%
B 7879 7615 15 15 0.19% 0.20%
C 7879 7615 2692 2692 34.17% 35.35%
D 7879 7615 25 25 0.32% 0.33%

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 13 254 12801 65.49 907 886 181.9
A 3 137 8279 40.64 907 886 181.9
A 0 226 7795 37.98 907 886 181.9
B 3 64 144198 840.67 905 881 170.5
B 15 32 91082 529.1 905 881 170.5
B 0 190 44150 253.8 905 881 170.5
C 7 247 10027561 56207.32 772 775 178.4
C 2 16 123220 686.39 772 775 178.4
C 14 238 121663 677.66 772 775 178.4
D 8 195 1260261 5971.81 868 839 210.9
D 1 255 106592 501.45 868 839 210.9
D 7 238 78814 369.73 868 839 210.9

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