ASTROSAT CZTI

Data Quality Report

Orbit 37642

Creation date: 2024-06-27T21:42:33.951426
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/AS1A11_075T01_9000005342_37642cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37642cztM0_level2_quad_clean.evt
Size (bytes)521,254,08074,756,160
Size497.1 MB 71.3 MB
Events in quadrant A5,690,883447,536
Events in quadrant B3,102,246481,023
Events in quadrant C3,329,843459,494
Events in quadrant D3,262,500462,343

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210263
B0131872
C0136132
D0140052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59195449.190742%
B5919921.554317%
C59192744.629160%
D5919811.368474%

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 7232 5920 391 391 5.41% 6.60%
B 7231 5918 54 54 0.75% 0.91%
C 7231 5918 171 171 2.36% 2.89%
D 7231 5918 58 58 0.80% 0.98%

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 15 222 2716027 20796.67 641 628 130.6
A 10 83 322556 2465.58 641 628 130.6
A 6 10 116855 890.16 641 628 130.6
B 5 172 265068 2061.58 662 643 128.3
B 15 85 43017 330.37 662 643 128.3
B 5 255 37736 289.19 662 643 128.3
C 14 254 519550 3574.0 622 626 145.2
C 15 214 266132 1828.63 622 626 145.2
C 12 249 42894 291.11 622 626 145.2
D 2 249 206153 1309.99 646 627 156.9
D 2 250 164729 1045.96 646 627 156.9
D 5 70 96343 610.08 646 627 156.9

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