ASTROSAT CZTI

Data Quality Report

Orbit 27874

Creation date: 2024-06-27T19:45:27.220825
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_002T05_9000004024_27874cztM0_level2.evt modeM0/AS1A10_002T05_9000004024_27874cztM0_level2_quad_clean.evt
Size (bytes)548,510,40081,587,520
Size523.1 MB 77.8 MB
Events in quadrant A3,409,531523,165
Events in quadrant B3,857,384510,596
Events in quadrant C5,169,672473,642
Events in quadrant D3,716,936491,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142420
B0156760
C0198060
D0153690

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6763881.301198%
B67631191.759574%
C67635508.132486%
D67631111.641283%

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 8703 6763 0 0 0.00% 0.00%
B 8703 6763 14 14 0.16% 0.21%
C 8703 6763 207 207 2.38% 3.06%
D 8703 6763 44 44 0.51% 0.65%

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 12036 63.02 883 866 177.3
A 3 137 8355 42.25 883 866 177.3
A 0 226 7593 37.95 883 866 177.3
B 10 245 416332 2522.54 866 844 164.7
B 0 190 31536 186.34 866 844 164.7
B 12 111 20642 120.2 866 844 164.7
C 3 233 1861369 9691.84 814 820 192.0
C 14 238 131022 678.24 814 820 192.0
C 13 61 5577 24.78 814 820 192.0
D 1 52 306013 1543.58 841 818 197.7
D 2 250 126331 634.8 841 818 197.7
D 7 80 56013 279.16 841 818 197.7

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