ASTROSAT CZTI

Data Quality Report

Orbit 20170830_G07_028T01_9000001500_level2

Creation date: 2025-11-16T22:11:53.304336
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/AS1G07_028T01_9000001500cztM0_level2.fits modeM0/AS1G07_028T01_9000001500cztM0_level2_quad_clean.evt
Size (bytes)225,941,760196,764,480
Size215.5 MB 187.6 MB
Events in quadrant A1,425,9081,166,075
Events in quadrant B1,367,2921,190,721
Events in quadrant C1,364,9061,102,781
Events in quadrant D1,174,208988,046

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0459250
B0513460
C0457770
D0547490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04480
B04480
C04480
D04480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A219412691.226015%
B219415422.470261%
C219412030.925209%
D219415892.684472%

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 26941 21938 0 0 0.00% 0.00%
B 26941 21936 0 0 0.00% 0.00%
C 26941 21939 0 0 0.00% 0.00%
D 26941 21936 0 0 0.00% 0.00%

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 0 29 1338 10.79 370 348 91.7
A 7 110 1176 9.02 370 348 91.7
A 9 19 1083 8.01 370 348 91.7
B 2 9 1057 9.56 362 347 74.2
B 5 128 970 8.39 362 347 74.2
B 12 226 888 7.29 362 347 74.2
C 1 81 1015 7.17 360 338 94.4
C 1 80 945 6.43 360 338 94.4
C 9 188 926 6.23 360 338 94.4
D 6 231 886 6.44 335 306 90.1
D 7 3 838 5.91 335 306 90.1
D 6 67 834 5.86 335 306 90.1

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