ASTROSAT CZTI

Data Quality Report

Orbit 37903

Creation date: 2024-06-27T21:45:57.258532
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/AS1T05_059T01_9000005354_37903cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37903cztM0_level2_quad_clean.evt
Size (bytes)503,331,84080,314,560
Size480.0 MB 76.6 MB
Events in quadrant A3,148,065512,466
Events in quadrant B3,808,520508,038
Events in quadrant C3,154,099515,942
Events in quadrant D4,724,497474,928

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131123
B0153762
C0131602
D0181242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6020250.415282%
B60202253.737542%
C6020570.946844%
D60204427.342193%

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 7303 6021 14 14 0.19% 0.23%
B 7303 6021 142 142 1.94% 2.36%
C 7303 6021 53 53 0.73% 0.88%
D 7303 6021 366 366 5.01% 6.08%

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 408725 2969.8 671 659 137.4
A 15 222 49719 357.05 671 659 137.4
A 13 6 26558 188.49 671 659 137.4
B 5 172 657630 5187.6 661 644 126.6
B 4 232 184363 1450.66 661 644 126.6
B 4 171 79989 626.51 661 644 126.6
C 15 214 252632 1678.24 648 652 150.1
C 0 10 146790 973.31 648 652 150.1
C 14 254 119758 793.27 648 652 150.1
D 1 52 1216595 7186.5 624 610 169.2
D 2 249 337534 1991.23 624 610 169.2
D 1 47 256295 1511.1 624 610 169.2

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