ASTROSAT CZTI

Data Quality Report

Orbit 19351

Creation date: 2024-06-27T18:01:42.403161
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/AS1A05_204T01_9000002856_19351cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19351cztM0_level2_quad_clean.evt
Size (bytes)472,164,480106,822,080
Size450.3 MB 101.9 MB
Events in quadrant A3,170,429731,265
Events in quadrant B3,371,429726,698
Events in quadrant C3,144,851685,959
Events in quadrant D4,208,241674,766

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131471
B0137401
C0129301
D0164391

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5961881.476262%
B59611151.929207%
C59611011.694347%
D59622383.991949%

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 7236 5961 0 0 0.00% 0.00%
B 7236 5961 26 26 0.36% 0.44%
C 7236 5961 0 0 0.00% 0.00%
D 7237 5962 155 155 2.14% 2.60%

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 5 203 8371 46.54 821 805 162.6
A 0 226 7149 39.02 821 805 162.6
A 13 254 6746 36.54 821 805 162.6
B 5 255 145987 969.85 799 781 149.7
B 0 190 25891 167.71 799 781 149.7
B 7 220 25390 164.36 799 781 149.7
C 14 238 121670 674.29 770 777 179.3
C 3 233 12673 66.35 770 777 179.3
C 5 175 7397 36.92 770 777 179.3
D 11 176 532075 2805.15 786 765 189.4
D 7 238 428656 2259.13 786 765 189.4
D 1 52 138746 728.5 786 765 189.4

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