ASTROSAT CZTI

Data Quality Report

Orbit 07966

Creation date: 2024-06-27T15:26:09.352262
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_07966cztM0_level2.evt modeM0/AS1G06_077T01_9000001090_07966cztM0_level2_quad_clean.evt
Size (bytes)589,118,40099,950,400
Size561.8 MB 95.3 MB
Events in quadrant A4,034,405603,089
Events in quadrant B4,161,659625,155
Events in quadrant C4,111,737626,351
Events in quadrant D4,961,136586,137

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01702

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01786354
B01808457
C01818647
D02070574

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84295126.074267%
B84274995.921443%
C84333624.292660%
D84276607.831969%

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 8520 8454 0 0 0.00% 0.00%
B 8520 8454 9 9 0.11% 0.11%
C 8520 8455 1 1 0.01% 0.01%
D 8520 8455 219 219 2.57% 2.59%

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 0 254 11858 50.0 1043 1018 216.8
A 0 226 9749 40.27 1043 1018 216.8
A 12 194 9068 37.13 1043 1018 216.8
B 4 239 46890 221.56 1043 1011 207.1
B 11 51 33201 155.45 1043 1011 207.1
B 12 111 23610 109.14 1043 1011 207.1
C 9 68 84005 343.82 1023 1024 241.3
C 1 16 24925 99.03 1023 1024 241.3
C 13 61 7868 28.36 1023 1024 241.3
D 1 52 540324 2184.06 1006 972 246.9
D 4 95 270254 1090.43 1006 972 246.9
D 2 152 181747 732.03 1006 972 246.9

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