ASTROSAT CZTI

Data Quality Report

Orbit 15670

Creation date: 2024-06-27T17:11:54.111111
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/AS1T02_084T01_9000002318_15670cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15670cztM0_level2_quad_clean.evt
Size (bytes)489,493,44094,996,800
Size466.8 MB 90.6 MB
Events in quadrant A3,077,531608,139
Events in quadrant B3,284,292617,105
Events in quadrant C3,204,032597,531
Events in quadrant D4,796,431580,126

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137753
B0141642
C0139292
D0190092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A680290.132314%
B6802150.220523%
C6802360.529256%
D68024446.527492%

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 7728 6804 0 0 0.00% 0.00%
B 7728 6804 1 1 0.01% 0.01%
C 7728 6804 0 0 0.00% 0.00%
D 7728 6804 444 444 5.75% 6.53%

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 0 226 7082 39.21 796 780 160.7
A 12 194 5810 31.29 796 780 160.7
A 3 137 5384 28.64 796 780 160.7
B 0 189 49988 320.72 799 781 153.4
B 4 216 24059 151.72 799 781 153.4
B 0 219 21667 136.13 799 781 153.4
C 14 238 118479 658.67 761 766 178.7
C 3 233 107009 594.49 761 766 178.7
C 13 61 5389 25.87 761 766 178.7
D 1 52 1891332 10407.88 745 723 181.7
D 10 70 38971 210.56 745 723 181.7
D 2 234 28180 151.15 745 723 181.7

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