ASTROSAT CZTI

Data Quality Report

Orbit 08681

Creation date: 2024-06-27T15:35:49.359957
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/AS1G07_024T01_9000001206_08681cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08681cztM0_level2_quad_clean.evt
Size (bytes)399,646,080113,149,440
Size381.1 MB 107.9 MB
Events in quadrant A2,851,611752,075
Events in quadrant B2,896,114768,023
Events in quadrant C3,001,317754,621
Events in quadrant D2,940,742728,087

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128154
B0127781
C0132451
D0131651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6073410.675119%
B6074400.658545%
C6074991.629898%
D6074791.300626%

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 7179 6074 11 11 0.15% 0.18%
B 7179 6075 3 3 0.04% 0.05%
C 7179 6075 50 50 0.70% 0.82%
D 7179 6074 45 45 0.63% 0.74%

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 8 5 53458 371.39 701 686 142.1
A 15 174 45406 314.72 701 686 142.1
A 5 16 24838 169.97 701 686 142.1
B 10 16 50038 371.28 707 691 132.9
B 0 219 25982 190.28 707 691 132.9
B 15 204 17747 128.33 707 691 132.9
C 1 16 193066 1217.83 685 688 158.0
C 14 234 74959 470.17 685 688 158.0
C 4 254 55802 348.89 685 688 158.0
D 12 233 156258 926.33 688 665 168.0
D 2 152 89184 527.0 688 665 168.0
D 7 71 53345 313.63 688 665 168.0

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