ASTROSAT CZTI

Data Quality Report

Orbit 16662

Creation date: 2024-06-27T17:25:50.116239
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_078T01_9000002462_16662cztM0_level2.evt modeM0/AS1A05_078T01_9000002462_16662cztM0_level2_quad_clean.evt
Size (bytes)449,556,480127,013,760
Size428.7 MB 121.1 MB
Events in quadrant A3,086,897860,460
Events in quadrant B3,572,227877,519
Events in quadrant C3,044,529836,171
Events in quadrant D3,462,708812,845

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137553
B0149292
C0135222
D0152582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6599350.530383%
B6599791.197151%
C6599430.651614%
D6599711.075921%

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 7640 6601 10 10 0.13% 0.15%
B 7640 6601 17 17 0.22% 0.26%
C 7640 6601 0 0 0.00% 0.00%
D 7640 6601 8 8 0.10% 0.12%

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 9 143 46976 295.78 774 757 156.3
A 3 1 29631 184.78 774 757 156.3
A 15 174 26675 165.87 774 757 156.3
B 15 35 208983 1426.94 781 761 145.9
B 0 229 107190 729.35 781 761 145.9
B 0 197 44336 298.62 781 761 145.9
C 14 238 116344 674.93 742 745 171.3
C 7 247 21732 122.53 742 745 171.3
C 3 233 8957 47.95 742 745 171.3
D 1 52 520529 2867.2 742 720 181.3
D 2 16 37368 202.15 742 720 181.3
D 2 234 31353 168.97 742 720 181.3

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