ASTROSAT CZTI

Data Quality Report

Orbit 19900

Creation date: 2024-06-27T18:08:29.618491
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/AS1T03_118T01_9000002962_19900cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19900cztM0_level2_quad_clean.evt
Size (bytes)489,833,28071,447,040
Size467.1 MB 68.1 MB
Events in quadrant A3,299,597445,887
Events in quadrant B3,460,206444,085
Events in quadrant C3,444,087421,792
Events in quadrant D4,204,134412,643

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138422
B0143512
C0142542
D0166722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6286570.906777%
B6286851.352211%
C6286811.288578%
D62861832.911231%

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 7491 6286 4 4 0.05% 0.06%
B 7491 6286 23 23 0.31% 0.37%
C 7491 6286 2 2 0.03% 0.03%
D 7491 6286 125 125 1.67% 1.99%

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 5 16 39833 229.66 845 829 169.8
A 0 226 7473 39.12 845 829 169.8
A 14 238 6476 33.25 845 829 169.8
B 0 182 63885 401.05 840 823 157.2
B 7 220 55490 347.66 840 823 157.2
B 12 111 18611 113.12 840 823 157.2
C 9 221 151764 808.46 808 814 186.7
C 14 238 129773 690.68 808 814 186.7
C 7 220 9981 49.1 808 814 186.7
D 1 20 330096 1694.94 812 791 194.3
D 12 218 298126 1530.39 812 791 194.3
D 5 222 217114 1113.42 812 791 194.3

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