ASTROSAT CZTI

Data Quality Report

Orbit 31375

Creation date: 2024-06-27T20:27:28.363633
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/AS1A10_064T05_9000004548_31375cztM0_level2.evt modeM0/AS1A10_064T05_9000004548_31375cztM0_level2_quad_clean.evt
Size (bytes)379,742,40060,367,680
Size362.2 MB 57.6 MB
Events in quadrant A2,157,963386,688
Events in quadrant B3,508,778382,369
Events in quadrant C2,638,131362,006
Events in quadrant D2,877,071367,700

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096261
B0141001
C0108821
D0117831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4680511.089744%
B46811092.328562%
C46812725.810724%
D46812034.336680%

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 4990 4681 0 0 0.00% 0.00%
B 4991 4682 0 0 0.00% 0.00%
C 4991 4682 14 14 0.28% 0.30%
D 4991 4682 137 137 2.74% 2.93%

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 7728 63.0 559 547 114.0
A 3 137 5991 47.76 559 547 114.0
A 0 226 4640 35.91 559 547 114.0
B 6 159 1264075 11769.35 551 535 107.4
B 0 190 26244 239.47 551 535 107.4
B 4 80 16770 151.22 551 535 107.4
C 3 233 357801 2842.25 529 531 125.7
C 14 238 127332 1008.76 529 531 125.7
C 14 254 58608 462.03 529 531 125.7
D 8 195 436615 3395.15 537 522 128.4
D 1 52 341802 2656.99 537 522 128.4
D 2 250 27905 213.19 537 522 128.4

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