ASTROSAT CZTI

Data Quality Report

Orbit 16777

Creation date: 2024-06-27T17:27:37.571229
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_004T02_9000002490_16777cztM0_level2.evt modeM0/AS1A05_004T02_9000002490_16777cztM0_level2_quad_clean.evt
Size (bytes)741,545,28092,116,800
Size707.2 MB 87.8 MB
Events in quadrant A5,264,097664,177
Events in quadrant B3,188,602704,301
Events in quadrant C3,622,625670,230
Events in quadrant D9,985,122339,013

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192872
B0131061
C0147151
D0337741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A586776813.090165%
B58671492.539628%
C58671923.272541%
D5867363061.871485%

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 7063 5868 471 471 6.67% 8.03%
B 7063 5868 5 5 0.07% 0.09%
C 7063 5869 10 10 0.14% 0.17%
D 7062 5868 2365 2365 33.49% 40.30%

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 15 174 2467127 17113.56 719 707 144.1
A 8 144 16928 112.55 719 707 144.1
A 0 13 10389 67.18 719 707 144.1
B 15 35 147849 1036.36 752 733 142.0
B 3 209 43117 298.57 752 733 142.0
B 0 189 26768 183.4 752 733 142.0
C 3 233 549668 3239.78 726 731 169.4
C 0 207 129406 759.43 726 731 169.4
C 14 238 111837 655.74 726 731 169.4
D 1 52 7162479 62436.37 478 465 114.7
D 12 110 914769 7970.64 478 465 114.7
D 12 218 58364 504.75 478 465 114.7

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