ASTROSAT CZTI

Data Quality Report

Orbit 22871

Creation date: 2024-06-27T18:46:49.439298
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_054T01_9000003378_22871cztM0_level2.evt modeM0/AS1A07_054T01_9000003378_22871cztM0_level2_quad_clean.evt
Size (bytes)652,881,600181,846,080
Size622.6 MB 173.4 MB
Events in quadrant A4,249,5981,279,195
Events in quadrant B4,495,4161,276,415
Events in quadrant C4,167,8561,184,671
Events in quadrant D6,266,6301,160,062

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178651
B0186651
C0178311
D0245001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8762270.308149%
B8763460.524934%
C8763540.616227%
D87631631.860094%

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 10097 8763 0 0 0.00% 0.00%
B 10098 8764 2 2 0.02% 0.02%
C 10098 8764 0 0 0.00% 0.00%
D 10098 8764 137 137 1.36% 1.56%

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 6 16 20865 91.65 1095 1073 216.0
A 13 254 14002 59.87 1095 1073 216.0
A 0 226 9622 39.59 1095 1073 216.0
B 0 190 246062 1237.18 1076 1053 198.0
B 0 189 25008 120.96 1076 1053 198.0
B 12 111 22759 109.61 1076 1053 198.0
C 14 238 167009 715.63 1017 1023 231.9
C 7 247 18138 73.79 1017 1023 231.9
C 2 16 9853 38.07 1017 1023 231.9
D 7 238 1145451 4551.08 1046 1018 251.5
D 9 1 485522 1926.73 1046 1018 251.5
D 1 52 119527 471.28 1046 1018 251.5

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