ASTROSAT CZTI

Data Quality Report

Orbit 11924

Creation date: 2024-06-27T16:20:07.342657
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/AS1A04_088T05_9000001764_11924cztM0_level2.evt modeM0/AS1A04_088T05_9000001764_11924cztM0_level2_quad_clean.evt
Size (bytes)501,281,28094,230,720
Size478.1 MB 89.9 MB
Events in quadrant A3,753,120612,047
Events in quadrant B3,843,496602,337
Events in quadrant C3,002,436610,303
Events in quadrant D4,146,698580,986

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154632
B0156701
C0132701
D0166811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6413841.309839%
B64131993.103072%
C6413390.608140%
D64132413.757992%

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 7569 6414 7 7 0.09% 0.11%
B 7569 6414 130 130 1.72% 2.03%
C 7569 6414 14 14 0.18% 0.22%
D 7569 6414 199 199 2.63% 3.10%

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 8 15 353785 2249.52 782 765 156.9
A 1 162 131020 830.01 782 765 156.9
A 1 178 68546 431.92 782 765 156.9
B 4 239 623046 4227.68 772 752 147.2
B 15 204 83106 559.49 772 752 147.2
B 0 231 61825 414.91 772 752 147.2
C 0 207 47501 266.96 758 764 175.1
C 13 61 5689 28.13 758 764 175.1
C 3 202 1873 6.33 758 764 175.1
D 1 52 683274 3794.39 755 733 179.9
D 8 195 241889 1340.64 755 733 179.9
D 10 199 99213 547.47 755 733 179.9

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