ASTROSAT CZTI

Data Quality Report

Orbit 30863

Creation date: 2024-06-27T20:20:30.598627
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/AS1A10_071T46_9000004460_30863cztM0_level2.evt modeM0/AS1A10_071T46_9000004460_30863cztM0_level2_quad_clean.evt
Size (bytes)700,358,40072,869,760
Size667.9 MB 69.5 MB
Events in quadrant A3,469,178454,695
Events in quadrant B9,760,306423,242
Events in quadrant C3,624,145429,694
Events in quadrant D3,901,273428,135

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141082
B0337834
C0145822
D0158472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67521041.540284%
B6751136020.145164%
C67511712.532958%
D6751831.229447%

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 7702 6752 0 0 0.00% 0.00%
B 7701 6751 609 609 7.91% 9.02%
C 7701 6751 12 12 0.16% 0.18%
D 7701 6751 11 11 0.14% 0.16%

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 13 254 12847 66.5 897 881 179.9
A 3 137 8779 43.89 897 881 179.9
A 0 31 7519 36.89 897 881 179.9
B 6 36 4509342 27893.15 844 823 161.6
B 6 159 1749397 10818.02 844 823 161.6
B 0 190 82606 505.97 844 823 161.6
C 14 238 136540 683.84 844 851 198.4
C 2 16 81200 404.94 844 851 198.4
C 0 10 55774 276.8 844 851 198.4
D 8 195 499990 2488.57 852 833 200.6
D 12 233 69660 343.14 852 833 200.6
D 2 250 57677 283.4 852 833 200.6

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