ASTROSAT CZTI

Data Quality Report

Orbit 20201110_A09_038T41_9000003986_level2

Creation date: 2025-12-17T11:31:02.218227
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/AS1A09_038T41_9000003986cztM0_level2.fits modeM0/AS1A09_038T41_9000003986cztM0_level2_quad_clean.evt
Size (bytes)48,559,68063,342,720
Size46.3 MB 60.4 MB
Events in quadrant A303,080422,614
Events in quadrant B290,496418,725
Events in quadrant C288,134386,665
Events in quadrant D245,298345,980

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102350
B0112210
C0108180
D0148280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4906420.856095%
B49061102.242152%
C4906801.630656%
D49064338.825927%

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 5960 4904 0 0 0.00% 0.00%
B 5960 4904 0 0 0.00% 0.00%
C 5961 4905 0 0 0.00% 0.00%
D 5960 4902 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 29 292 10.02 79 74 21.7
A 0 30 244 7.81 79 74 21.7
A 15 236 235 7.39 79 74 21.7
B 2 9 218 8.43 77 74 17.1
B 5 232 205 7.67 77 74 17.1
B 5 128 202 7.49 77 74 17.1
C 3 187 204 6.29 76 72 21.0
C 3 126 203 6.24 76 72 21.0
C 2 191 199 6.05 76 72 21.0
D 4 246 196 6.47 69 63 20.6
D 10 113 185 5.94 69 63 20.6
D 6 231 181 5.74 69 63 20.6

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