ASTROSAT CZTI

Data Quality Report

Orbit 00931

Creation date: 2024-06-27T14:04:56.537979
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/AS1P01_163T03_9000000186_00931cztM0_level2.evt modeM0/AS1P01_163T03_9000000186_00931cztM0_level2_quad_clean.evt
Size (bytes)1,318,371,840106,220,160
Size1.2 GB 101.3 MB
Events in quadrant A11,022,119667,064
Events in quadrant B9,927,114683,423
Events in quadrant C9,500,173662,111
Events in quadrant D8,951,692651,416

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0383700
B0351710
C0338740
D0322810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79562152.702363%
B7956140.175968%
C795630.037707%
D7956400.502765%

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 7956 7956 1051 1051 13.21% 13.21%
B 7956 7956 383 383 4.81% 4.81%
C 7956 7956 263 263 3.31% 3.31%
D 7956 7956 304 304 3.82% 3.82%

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 14 170 1759002 3010.4 2413 2435 583.5
A 11 79 9809 12.64 2413 2435 583.5
A 3 111 7660 8.95 2413 2435 583.5
B 4 200 28256 42.83 2572 2583 599.5
B 5 249 25959 39.0 2572 2583 599.5
B 0 182 18887 27.2 2572 2583 599.5
C 15 241 289179 441.03 2321 2400 650.3
C 9 144 91672 137.29 2321 2400 650.3
C 3 111 29647 41.9 2321 2400 650.3
D 12 188 513879 741.85 2211 2286 689.6
D 1 4 116805 166.06 2211 2286 689.6
D 13 171 60489 84.4 2211 2286 689.6

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