ASTROSAT CZTI

Data Quality Report

Orbit 03618

Creation date: 2024-06-27T14:31:40.563029
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/AS1G05_234T02_9000000474_03618cztM0_level2.evt modeM0/AS1G05_234T02_9000000474_03618cztM0_level2_quad_clean.evt
Size (bytes)412,551,36085,654,080
Size393.4 MB 81.7 MB
Events in quadrant A2,746,870558,094
Events in quadrant B3,199,807554,634
Events in quadrant C3,307,860541,532
Events in quadrant D2,845,480534,434

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120932
B0133261
C0136711
D0124741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57891021.761962%
B57891001.727414%
C57891071.848333%
D57891051.813785%

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 7034 5790 6 6 0.09% 0.10%
B 7034 5790 3 3 0.04% 0.05%
C 7034 5790 29 29 0.41% 0.50%
D 7034 5790 30 30 0.43% 0.52%

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 50 39323 273.46 694 679 141.3
A 12 194 7636 49.23 694 679 141.3
A 15 174 7451 47.92 694 679 141.3
B 4 81 173059 1295.98 695 678 133.0
B 15 204 133363 997.54 695 678 133.0
B 0 182 46542 344.81 695 678 133.0
C 2 53 429140 2751.46 671 673 155.7
C 9 247 248680 1592.61 671 673 155.7
C 13 61 5740 32.54 671 673 155.7
D 13 223 126913 786.74 675 657 160.5
D 13 239 41490 254.44 675 657 160.5
D 1 20 32606 199.08 675 657 160.5

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
Veto Counter