ASTROSAT CZTI

Data Quality Report

Orbit 31279

Creation date: 2024-06-27T20:26:04.634975
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/AS1T04_024T01_9000004530_31279cztM0_level2.evt modeM0/AS1T04_024T01_9000004530_31279cztM0_level2_quad_clean.evt
Size (bytes)571,210,56097,130,880
Size544.7 MB 92.6 MB
Events in quadrant A3,497,336645,208
Events in quadrant B5,377,369638,157
Events in quadrant C3,986,236591,288
Events in quadrant D3,994,418609,499

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142842
B0203422
C0159512
D0160182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6554580.884956%
B65541412.151358%
C65543485.309735%
D6554901.373207%

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 7804 6555 0 0 0.00% 0.00%
B 7804 6555 10 10 0.13% 0.15%
C 7804 6555 25 25 0.32% 0.38%
D 7804 6555 38 38 0.49% 0.58%

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 11804 61.06 907 894 178.7
A 3 137 8443 42.25 907 894 178.7
A 0 226 7789 38.59 907 894 178.7
B 6 159 1738481 10607.03 879 860 163.8
B 4 80 111848 677.51 879 860 163.8
B 0 230 45160 270.42 879 860 163.8
C 3 233 253151 1336.81 827 833 188.7
C 14 238 196577 1037.07 827 833 188.7
C 0 10 184268 971.86 827 833 188.7
D 8 195 516457 2450.23 858 837 210.4
D 12 218 90049 423.94 858 837 210.4
D 12 233 76740 360.69 858 837 210.4

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