ASTROSAT CZTI

Data Quality Report

Orbit 37923

Creation date: 2024-06-27T21:46:10.352693
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_37923cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37923cztM0_level2_quad_clean.evt
Size (bytes)420,937,92061,583,040
Size401.4 MB 58.7 MB
Events in quadrant A3,029,693381,092
Events in quadrant B3,604,121364,917
Events in quadrant C2,934,619375,728
Events in quadrant D2,792,103344,269

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121693
B0143262
C0120612
D0121892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A569490.158061%
B56942334.092027%
C5694400.702494%
D5694420.737619%

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 9099 5696 4 4 0.04% 0.07%
B 9099 5696 176 176 1.93% 3.09%
C 9099 5696 24 24 0.26% 0.42%
D 9099 5696 39 39 0.43% 0.68%

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 377539 2830.2 659 646 133.2
A 15 222 78761 586.59 659 646 133.2
A 12 189 15516 111.66 659 646 133.2
B 5 172 430413 3502.08 644 627 122.7
B 0 229 257818 2095.7 644 627 122.7
B 7 202 146864 1191.6 644 627 122.7
C 15 214 239745 1606.13 642 646 148.9
C 0 10 119898 801.07 642 646 148.9
C 14 254 41132 271.96 642 646 148.9
D 10 199 53688 338.0 643 626 157.0
D 12 233 50866 320.02 643 626 157.0
D 10 118 49790 313.17 643 626 157.0

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