ASTROSAT CZTI

Data Quality Report

Orbit 35845

Creation date: 2022-06-08T17:35:06.971138
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/AS1A11_080T01_9000005146_35845cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35845cztM0_level2_quad_clean.evt
Size (bytes)426,470,400100,296,000
Size406.7 MB 95.6 MB
Events in quadrant A2,842,745675,044
Events in quadrant B3,080,374670,177
Events in quadrant C3,284,434660,949
Events in quadrant D3,324,989637,047

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118003
B0126482
C0129052
D0135332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5634130.230742%
B5634530.940717%
C56341662.946397%
D5634631.118211%

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 7128 5635 0 0 0.00% 0.00%
B 7128 5635 29 29 0.41% 0.51%
C 7128 5635 140 140 1.96% 2.48%
D 7128 5635 50 50 0.70% 0.89%

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 10 83 161938 1156.57 682 671 139.4
A 15 169 23210 161.64 682 671 139.4
A 13 6 11714 79.2 682 671 139.4
B 5 172 209704 1592.12 673 657 131.3
B 4 232 85262 644.36 673 657 131.3
B 4 81 70237 529.93 673 657 131.3
C 0 10 304123 1988.73 654 663 152.6
C 15 214 233432 1525.45 654 663 152.6
C 15 208 197471 1289.78 654 663 152.6
D 13 249 152280 925.44 659 643 163.9
D 13 13 140154 851.43 659 643 163.9
D 2 250 124895 758.31 659 643 163.9

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