ASTROSAT CZTI

Data Quality Report

Orbit 25625

Creation date: 2024-06-27T19:19:41.506253
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/AS1A07_127T03_9000003732_25625cztM0_level2.evt modeM0/AS1A07_127T03_9000003732_25625cztM0_level2_quad_clean.evt
Size (bytes)516,755,52091,267,200
Size492.8 MB 87.0 MB
Events in quadrant A3,800,465567,291
Events in quadrant B3,631,681580,554
Events in quadrant C3,591,954554,479
Events in quadrant D4,126,179549,064

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156160
B0153650
C0152790
D0169120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73592623.560266%
B73602653.600543%
C73602683.641304%
D73602353.192935%

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 7449 7361 1 1 0.01% 0.01%
B 7450 7362 1 1 0.01% 0.01%
C 7450 7362 0 0 0.00% 0.00%
D 7450 7362 17 17 0.23% 0.23%

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 8 192 171450 917.51 920 900 185.9
A 6 16 33779 176.88 920 900 185.9
A 3 1 22507 116.24 920 900 185.9
B 0 190 47383 262.26 909 884 177.3
B 12 111 22218 120.33 909 884 177.3
B 11 111 20136 108.58 909 884 177.3
C 14 238 139219 661.05 882 886 209.3
C 2 16 14221 63.72 882 886 209.3
C 13 61 6143 25.12 882 886 209.3
D 1 52 374560 1634.03 896 873 228.7
D 8 195 175267 762.58 896 873 228.7
D 2 244 165156 718.37 896 873 228.7

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