ASTROSAT CZTI

Data Quality Report

Orbit 14474

Creation date: 2024-06-27T16:55:40.789637
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/AS1G08_083T01_9000002134_14474cztM0_level2.evt modeM0/AS1G08_083T01_9000002134_14474cztM0_level2_quad_clean.evt
Size (bytes)319,968,00070,732,800
Size305.1 MB 67.5 MB
Events in quadrant A2,308,479453,666
Events in quadrant B2,403,790462,259
Events in quadrant C2,320,079453,879
Events in quadrant D2,329,066433,695

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099702
B0102421
C099741
D0103411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4822190.394027%
B4822250.518457%
C4822160.331813%
D4822170.352551%

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 6198 4824 2 2 0.03% 0.04%
B 6198 4824 3 3 0.05% 0.06%
C 6198 4824 0 0 0.00% 0.00%
D 6198 4824 3 3 0.05% 0.06%

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 12 189 45295 379.39 581 569 117.9
A 9 143 12381 100.2 581 569 117.9
A 3 1 7552 59.23 581 569 117.9
B 0 189 22732 202.83 587 574 109.2
B 4 48 20906 186.11 587 574 109.2
B 0 229 18159 160.97 587 574 109.2
C 3 233 86827 664.57 568 571 129.8
C 0 207 13530 99.84 568 571 129.8
C 13 61 4128 27.41 568 571 129.8
D 2 152 126140 926.92 557 543 135.5
D 12 110 36161 262.86 557 543 135.5
D 10 199 26994 195.21 557 543 135.5

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