ASTROSAT CZTI

Data Quality Report

Orbit 23980

Creation date: 2024-06-27T19:00:46.907730
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/AS1A07_065T01_9000003554_23980cztM0_level2.evt modeM0/AS1A07_065T01_9000003554_23980cztM0_level2_quad_clean.evt
Size (bytes)679,023,36060,984,000
Size647.6 MB 58.2 MB
Events in quadrant A3,246,855414,179
Events in quadrant B3,412,497423,545
Events in quadrant C3,372,626394,934
Events in quadrant D10,086,213154,499

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136132
B0140672
C0139323
D0346052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6565721.096725%
B65651041.584158%
C65641492.269957%
D6564403761.502133%

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 7570 6565 0 0 0.00% 0.00%
B 7570 6565 3 3 0.04% 0.05%
C 7569 6565 26 26 0.34% 0.40%
D 7569 6564 2234 2234 29.52% 34.03%

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 13 254 9982 54.12 842 824 169.2
A 3 137 7420 38.98 842 824 169.2
A 0 226 7102 37.1 842 824 169.2
B 0 197 98319 602.7 838 817 161.8
B 12 111 19830 117.53 838 817 161.8
B 11 111 17978 106.08 838 817 161.8
C 0 10 149733 797.63 794 801 186.7
C 14 238 129437 688.93 794 801 186.7
C 13 61 5442 24.86 794 801 186.7
D 12 218 7629319 66341.37 466 451 115.0
D 12 250 315731 2741.71 466 451 115.0
D 1 52 133158 1154.03 466 451 115.0

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