ASTROSAT CZTI

Data Quality Report

Orbit 15675

Creation date: 2024-06-27T17:11:57.522869
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_15675cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15675cztM0_level2_quad_clean.evt
Size (bytes)460,805,76068,837,760
Size439.5 MB 65.6 MB
Events in quadrant A3,178,099414,734
Events in quadrant B3,337,602423,205
Events in quadrant C3,310,628413,653
Events in quadrant D3,704,453396,168

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130873
B0135302
C0134282
D0147422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6249310.496079%
B6249711.136182%
C6249831.328213%
D62492323.712594%

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 7585 6251 0 0 0.00% 0.00%
B 7585 6251 18 18 0.24% 0.29%
C 7585 6251 0 0 0.00% 0.00%
D 7585 6251 170 170 2.24% 2.72%

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 7268 39.4 826 811 163.9
A 12 194 6200 32.88 826 811 163.9
A 3 137 5162 26.55 826 811 163.9
B 4 173 63493 411.55 830 813 152.3
B 12 111 17214 107.69 830 813 152.3
B 0 214 16594 103.62 830 813 152.3
C 14 238 126700 685.26 808 815 183.7
C 3 233 19649 102.52 808 815 183.7
C 0 207 8519 41.94 808 815 183.7
D 1 52 313020 1489.73 798 781 209.6
D 10 70 298095 1418.52 798 781 209.6
D 6 112 28800 133.68 798 781 209.6

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