ASTROSAT CZTI

Data Quality Report

Orbit 07956

Creation date: 2024-06-27T15:26:01.282264
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/AS1G06_077T01_9000001090_07956cztM0_level2.evt modeM0/AS1G06_077T01_9000001090_07956cztM0_level2_quad_clean.evt
Size (bytes)631,054,08083,471,040
Size601.8 MB 79.6 MB
Events in quadrant A3,166,905540,636
Events in quadrant B3,348,099553,675
Events in quadrant C3,179,045549,667
Events in quadrant D8,963,405416,038

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139153
B0145072
C0139962
D0312272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6703630.939878%
B6703841.253170%
C6703450.671341%
D6703239735.760107%

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 8773 6705 0 0 0.00% 0.00%
B 8773 6705 7 7 0.08% 0.10%
C 8773 6705 0 0 0.00% 0.00%
D 8773 6705 2131 2131 24.29% 31.78%

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 8 15 17117 99.01 814 794 164.9
A 13 253 8013 43.79 814 794 164.9
A 0 226 7598 41.27 814 794 164.9
B 4 239 59863 378.07 820 800 156.2
B 5 255 42165 264.79 820 800 156.2
B 11 51 30799 192.03 820 800 156.2
C 1 16 40375 212.82 802 805 185.9
C 12 4 6760 32.03 802 805 185.9
C 13 61 6079 28.37 802 805 185.9
D 1 52 6294789 39377.31 654 635 159.8
D 1 20 46988 289.99 654 635 159.8
D 12 233 41194 253.74 654 635 159.8

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