ASTROSAT CZTI

Data Quality Report

Orbit 19286

Creation date: 2024-06-27T18:01:04.767686
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_107T01_9000002852_19286cztM0_level2.evt modeM0/AS1A05_107T01_9000002852_19286cztM0_level2_quad_clean.evt
Size (bytes)369,492,48065,727,360
Size352.4 MB 62.7 MB
Events in quadrant A2,526,057408,805
Events in quadrant B2,536,639417,894
Events in quadrant C2,552,149408,997
Events in quadrant D3,207,476376,353

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111871
B0111681
C0111671
D0135341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5403711.314085%
B5403981.813807%
C54041092.017024%
D54043316.125093%

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 5473 5404 1 1 0.02% 0.02%
B 5473 5403 2 2 0.04% 0.04%
C 5474 5405 0 0 0.00% 0.00%
D 5474 5405 263 263 4.80% 4.87%

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 9 143 42005 316.66 641 627 130.7
A 13 254 8060 56.88 641 627 130.7
A 0 226 5548 37.66 641 627 130.7
B 12 111 15141 116.18 640 621 125.0
B 0 190 15080 115.69 640 621 125.0
B 11 111 13812 105.55 640 621 125.0
C 14 238 95868 648.45 620 623 146.9
C 3 233 17654 115.95 620 623 146.9
C 8 128 12587 81.45 620 623 146.9
D 7 223 682901 4669.32 600 583 146.1
D 13 138 161659 1102.3 600 583 146.1
D 1 52 75400 512.0 600 583 146.1

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