ASTROSAT CZTI

Data Quality Report

Orbit 31498

Creation date: 2024-06-27T20:26:42.346341
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/AS1A10_053T30_9000004536_31498cztM0_level2.evt modeM0/AS1A10_053T30_9000004536_31498cztM0_level2_quad_clean.evt
Size (bytes)187,519,68027,748,800
Size178.8 MB 26.5 MB
Events in quadrant A1,480,569175,424
Events in quadrant B1,610,250180,416
Events in quadrant C1,217,186173,528
Events in quadrant D1,238,547170,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068391218
B071281129
C05564806
D05771860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0468
B04810
C0499
D0468

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113
B0124
C0113
D0124

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1919894.637832%
B1919351.823867%
C19231025.304212%
D1933221.138127%

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 3593 1948 62 62 1.73% 3.18%
B 3607 1945 3 3 0.08% 0.15%
C 3609 1950 45 45 1.25% 2.31%
D 3606 1955 16 16 0.44% 0.82%

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 442835 8010.15 269 265 55.3
A 13 254 3400 56.74 269 265 55.3
A 3 137 2475 40.0 269 265 55.3
B 6 159 504690 9598.99 270 265 52.5
B 4 80 18587 348.66 270 265 52.5
B 15 201 13808 257.72 270 265 52.5
C 0 10 175435 2887.89 254 255 60.7
C 14 238 42138 690.45 254 255 60.7
C 2 114 4403 68.38 254 255 60.7
D 8 195 112469 1735.82 265 257 64.6
D 12 233 76582 1180.68 265 257 64.6
D 2 250 21215 324.2 265 257 64.6

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