ASTROSAT CZTI

Data Quality Report

Orbit 05931

Creation date: 2024-06-27T15:00:56.615579
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/AS1G06_028T01_9000000768_05931cztM0_level2.evt modeM0/AS1G06_028T01_9000000768_05931cztM0_level2_quad_clean.evt
Size (bytes)506,522,88084,516,480
Size483.1 MB 80.6 MB
Events in quadrant A2,939,047544,687
Events in quadrant B3,198,248543,336
Events in quadrant C2,938,955538,358
Events in quadrant D5,830,086486,728

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130712
B0137921
C0130041
D0217921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6391250.391175%
B6391771.204819%
C6391270.422469%
D63915328.324206%

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 7476 6392 2 2 0.03% 0.03%
B 7476 6391 25 25 0.33% 0.39%
C 7476 6392 0 0 0.00% 0.00%
D 7476 6392 377 377 5.04% 5.90%

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 7 16 27120 170.64 754 738 154.6
A 12 194 7292 42.39 754 738 154.6
A 0 226 6928 40.04 754 738 154.6
B 4 80 75165 510.24 761 745 145.9
B 15 204 73436 498.39 761 745 145.9
B 15 255 58855 398.42 761 745 145.9
C 9 68 21796 122.2 741 749 172.2
C 14 67 17582 97.73 741 749 172.2
C 13 61 5919 30.02 741 749 172.2
D 2 63 1922013 10894.05 721 700 176.4
D 1 20 1017133 5763.28 721 700 176.4
D 2 152 87425 491.74 721 700 176.4

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