ASTROSAT CZTI

Data Quality Report

Orbit 13636

Creation date: 2024-06-27T16:43:46.358090
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_038T01_9000002018_13636cztM0_level2.evt modeM0/AS1G08_038T01_9000002018_13636cztM0_level2_quad_clean.evt
Size (bytes)540,673,92076,224,960
Size515.6 MB 72.7 MB
Events in quadrant A3,000,892455,887
Events in quadrant B3,139,687465,201
Events in quadrant C3,130,790499,073
Events in quadrant D6,687,917459,731

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126172
B0128611
C0127691
D0242091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61351111.809291%
B61351201.955990%
C6135861.401793%
D61352534.123879%

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 7271 6137 0 0 0.00% 0.00%
B 7271 6137 2 2 0.03% 0.03%
C 7271 6137 1 1 0.01% 0.02%
D 7271 6137 61 61 0.84% 0.99%

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 0 226 7089 40.07 779 762 157.9
A 12 194 5987 33.09 779 762 157.9
A 1 162 5661 31.03 779 762 157.9
B 0 219 47883 324.48 771 752 145.3
B 0 229 20589 136.57 771 752 145.3
B 3 209 20369 135.06 771 752 145.3
C 3 233 159418 914.76 760 768 173.4
C 0 207 6935 35.56 760 768 173.4
C 13 61 5461 27.06 760 768 173.4
D 13 122 2972489 16726.07 752 733 177.7
D 5 222 513306 2884.94 752 733 177.7
D 8 195 223681 1254.83 752 733 177.7

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