ASTROSAT CZTI

Data Quality Report

Orbit 34359

Creation date: 2022-02-04T17:22:43.098576
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/AS1A05_019T01_9000004906_34359cztM0_level2.evt modeM0/AS1A05_019T01_9000004906_34359cztM0_level2_quad_clean.evt
Size (bytes)738,250,56079,444,800
Size704.1 MB 75.8 MB
Events in quadrant A2,607,102589,959
Events in quadrant B3,095,298591,250
Events in quadrant C3,022,706576,901
Events in quadrant D13,253,215253,546

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114143
B0127362
C0123222
D0430862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A560230.053552%
B5602741.320957%
C5602220.392717%
D5602461582.381292%

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 7215 5603 0 0 0.00% 0.00%
B 7215 5603 43 43 0.60% 0.77%
C 7215 5603 15 15 0.21% 0.27%
D 7214 5602 4445 4445 61.62% 79.35%

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 31634 232.72 661 647 133.1
A 13 6 14533 104.29 661 647 133.1
A 13 254 8537 59.26 661 647 133.1
B 5 172 221991 1751.14 652 634 126.4
B 15 201 74630 585.38 652 634 126.4
B 5 200 73917 579.74 652 634 126.4
C 15 214 234895 1573.87 639 642 148.8
C 0 239 86783 578.75 639 642 148.8
C 3 233 82631 550.86 639 642 148.8
D 7 223 10934033 122898.26 367 358 89.0
D 8 195 500753 5624.61 367 358 89.0
D 12 235 158087 1772.92 367 358 89.0

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