ASTROSAT CZTI

Data Quality Report

Orbit 32970

Creation date: 2024-06-27T20:44:04.276302
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/AS1C07_003T01_9000004754_32970cztM0_level2.evt modeM0/AS1C07_003T01_9000004754_32970cztM0_level2_quad_clean.evt
Size (bytes)469,180,80087,215,040
Size447.4 MB 83.2 MB
Events in quadrant A2,643,218579,140
Events in quadrant B3,775,193568,536
Events in quadrant C2,892,050565,467
Events in quadrant D4,522,601540,074

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113613
B0147142
C0122262
D0174812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A554060.108303%
B55403325.992780%
C5540941.696751%
D5540701.263538%

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 8856 5541 1 1 0.01% 0.02%
B 8856 5541 228 228 2.57% 4.11%
C 8856 5541 78 78 0.88% 1.41%
D 8856 5541 47 47 0.53% 0.85%

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 12 227 43166 318.28 665 653 133.6
A 13 254 9722 67.9 665 653 133.6
A 14 207 9629 67.2 665 653 133.6
B 5 172 611787 4796.62 652 635 127.4
B 5 200 307484 2408.3 652 635 127.4
B 7 219 156015 1219.5 652 635 127.4
C 0 10 288903 1955.92 633 638 147.4
C 14 67 50199 336.28 633 638 147.4
C 3 233 45429 303.91 633 638 147.4
D 8 195 1619530 9652.67 633 621 167.7
D 7 80 115186 683.09 633 621 167.7
D 2 120 108457 642.97 633 621 167.7

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