ASTROSAT CZTI

Data Quality Report

Orbit 28118

Creation date: 2024-06-27T19:48:15.750200
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/AS1A10_024T01_9000004062_28118cztM0_level2.evt modeM0/AS1A10_024T01_9000004062_28118cztM0_level2_quad_clean.evt
Size (bytes)533,459,52093,697,920
Size508.7 MB 89.4 MB
Events in quadrant A3,106,264614,283
Events in quadrant B3,751,231612,843
Events in quadrant C3,119,502588,389
Events in quadrant D5,722,006552,240

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137430
B0155630
C0137560
D0215930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6741270.400534%
B67411001.483459%
C6741600.890076%
D67424326.407594%

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 7251 6742 0 0 0.00% 0.00%
B 7251 6742 41 41 0.57% 0.61%
C 7251 6742 0 0 0.00% 0.00%
D 7252 6743 367 367 5.06% 5.44%

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 12788 73.35 797 780 163.7
A 13 254 12109 69.21 797 780 163.7
A 3 137 7655 42.0 797 780 163.7
B 10 245 283216 1874.78 791 770 150.7
B 0 190 63332 415.27 791 770 150.7
B 4 200 53782 351.88 791 770 150.7
C 14 238 121561 679.51 755 758 177.8
C 3 233 35663 196.34 755 758 177.8
C 2 16 10262 53.46 755 758 177.8
D 1 52 1354483 7554.54 747 725 179.2
D 7 80 443531 2471.04 747 725 179.2
D 2 250 334589 1863.1 747 725 179.2

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