ASTROSAT CZTI

Data Quality Report

Orbit 25462

Creation date: 2024-06-27T19:17:55.995868
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/AS1A09_085T02_9000003716_25462cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25462cztM0_level2_quad_clean.evt
Size (bytes)564,238,080123,848,640
Size538.1 MB 118.1 MB
Events in quadrant A3,782,809847,859
Events in quadrant B3,538,555847,666
Events in quadrant C3,772,972813,011
Events in quadrant D5,547,483783,152

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156530
B0146040
C0154130
D0210020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65881291.958106%
B65891442.185461%
C65892093.171953%
D65892984.522689%

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 7853 6589 0 0 0.00% 0.00%
B 7854 6590 0 0 0.00% 0.00%
C 7854 6590 12 12 0.15% 0.18%
D 7854 6590 169 169 2.15% 2.56%

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 6 16 193296 1060.64 928 911 181.4
A 13 254 11322 57.4 928 911 181.4
A 4 2 10544 53.11 928 911 181.4
B 12 111 19670 112.1 902 882 167.6
B 11 111 18024 102.27 902 882 167.6
B 0 190 17884 101.44 902 882 167.6
C 9 54 187068 915.73 881 889 203.3
C 14 238 143457 701.23 881 889 203.3
C 13 61 5932 24.8 881 889 203.3
D 1 52 1703621 7885.92 900 877 215.9
D 7 238 239263 1104.04 900 877 215.9
D 12 233 119566 549.68 900 877 215.9

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