ASTROSAT CZTI

Data Quality Report

Orbit 23750

Creation date: 2024-06-27T18:58:16.901438
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/AS1A08_009T01_9000003516_23750cztM0_level2.evt modeM0/AS1A08_009T01_9000003516_23750cztM0_level2_quad_clean.evt
Size (bytes)549,380,16099,420,480
Size523.9 MB 94.8 MB
Events in quadrant A3,185,122655,269
Events in quadrant B4,929,130645,721
Events in quadrant C3,373,782643,976
Events in quadrant D4,714,058617,043

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139332
B0191402
C0144222
D0183812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6435520.808081%
B64354517.008547%
C64351141.771562%
D64343325.160087%

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 7600 6435 0 0 0.00% 0.00%
B 7599 6434 229 229 3.01% 3.56%
C 7600 6435 1 1 0.01% 0.02%
D 7599 6434 281 281 3.70% 4.37%

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 13 254 11239 62.98 826 807 165.6
A 0 226 7223 38.73 826 807 165.6
A 3 137 6946 37.06 826 807 165.6
B 3 64 1609559 10596.21 810 789 151.8
B 0 189 87351 570.14 810 789 151.8
B 0 229 52429 340.13 810 789 151.8
C 14 238 129598 690.38 805 810 186.5
C 7 247 82828 439.66 805 810 186.5
C 5 4 11918 59.55 805 810 186.5
D 1 52 926290 4806.16 798 774 192.6
D 8 195 708732 3676.39 798 774 192.6
D 2 234 27233 137.4 798 774 192.6

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