ASTROSAT CZTI

Data Quality Report

Orbit 11781

Creation date: 2024-06-27T16:18:12.949089
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/AS1C03_024T01_9000001742_11781cztM0_level2.evt modeM0/AS1C03_024T01_9000001742_11781cztM0_level2_quad_clean.evt
Size (bytes)643,985,28053,199,360
Size614.2 MB 50.7 MB
Events in quadrant A3,350,910318,770
Events in quadrant B6,869,274263,155
Events in quadrant C2,920,651321,790
Events in quadrant D5,960,988291,158

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136372
B0243201
C0123051
D0217711

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5942490.824638%
B5942110418.579603%
C594290.151464%
D594280513.547627%

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 7298 5944 1 1 0.01% 0.02%
B 7298 5944 842 842 11.54% 14.17%
C 7298 5944 0 0 0.00% 0.00%
D 7298 5944 669 669 9.17% 11.26%

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 1 162 138445 885.6 768 753 155.5
A 1 178 70489 448.52 768 753 155.5
A 1 161 62897 399.69 768 753 155.5
B 10 16 3525196 25920.11 733 719 136.0
B 4 239 323322 2372.52 733 719 136.0
B 15 204 64565 469.54 733 719 136.0
C 13 61 5690 28.75 748 756 171.6
C 14 234 2435 9.78 748 756 171.6
C 3 202 1846 6.35 748 756 171.6
D 13 137 1418555 8491.58 698 680 167.0
D 1 52 1281677 7671.83 698 680 167.0
D 10 199 463398 2771.19 698 680 167.0

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