ASTROSAT CZTI

Data Quality Report

Orbit 25705

Creation date: 2024-06-27T19:20:35.881981
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/AS1A09_008T03_9000003746_25705cztM0_level2.evt modeM0/AS1A09_008T03_9000003746_25705cztM0_level2_quad_clean.evt
Size (bytes)505,088,64094,608,000
Size481.7 MB 90.2 MB
Events in quadrant A3,294,658634,891
Events in quadrant B3,310,991642,128
Events in quadrant C3,269,912592,489
Events in quadrant D4,996,021558,291

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138110
B0137450
C0137240
D0189590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6262610.974130%
B6262701.117854%
C62621282.044075%
D62624066.483552%

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 7502 6262 0 0 0.00% 0.00%
B 7502 6262 1 1 0.01% 0.02%
C 7502 6262 15 15 0.20% 0.24%
D 7502 6262 343 343 4.57% 5.48%

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 0 13 64551 380.13 836 821 167.7
A 13 254 8798 47.58 836 821 167.7
A 3 1 7470 39.66 836 821 167.7
B 0 190 30149 186.32 827 809 157.5
B 12 111 18241 110.7 827 809 157.5
B 0 245 17660 107.01 827 809 157.5
C 14 238 126158 683.22 782 789 183.5
C 3 233 94055 508.27 782 789 183.5
C 13 61 5606 26.25 782 789 183.5
D 7 80 1586844 8377.24 776 753 189.3
D 8 195 242429 1276.46 776 753 189.3
D 2 244 94192 493.52 776 753 189.3

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