ASTROSAT CZTI

Data Quality Report

Orbit 02141

Creation date: 2024-06-27T14:14:31.082651
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/AS1T01_072T02_9000000336_02141cztM0_level2.evt modeM0/AS1T01_072T02_9000000336_02141cztM0_level2_quad_clean.evt
Size (bytes)373,078,08085,988,160
Size355.8 MB 82.0 MB
Events in quadrant A2,623,808545,741
Events in quadrant B2,969,743558,131
Events in quadrant C2,652,348539,377
Events in quadrant D2,628,954526,497

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126112
B0129952
C0126456
D0128722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A622260.096432%
B622230.048216%
C622030.048232%
D6223190.305319%

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 7477 6223 1 1 0.01% 0.02%
B 7477 6223 2 2 0.03% 0.03%
C 7477 6222 0 0 0.00% 0.00%
D 7478 6224 17 17 0.23% 0.27%

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 15 191 10776 76.91 674 662 131.5
A 0 1 8990 63.33 674 662 131.5
A 14 5 8889 62.56 674 662 131.5
B 5 68 191170 1530.12 698 685 124.5
B 0 234 33784 265.88 698 685 124.5
B 0 168 24861 194.2 698 685 124.5
C 9 85 26438 178.11 667 671 144.7
C 10 82 6244 38.52 667 671 144.7
C 10 65 4690 27.78 667 671 144.7
D 10 199 106634 722.38 659 647 146.7
D 2 31 12876 83.35 659 647 146.7
D 2 14 10142 64.72 659 647 146.7

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