ASTROSAT CZTI

Data Quality Report

Orbit 20230103_A12_037T03_9000005460_level2

Creation date: 2023-01-04T11:04:33.105210
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/AS1A12_037T03_9000005460cztM0_level2.fits modeM0/AS1A12_037T03_9000005460cztM0_level2_quad_clean.evt
Size (bytes)98,640,00080,493,120
Size94.1 MB 76.8 MB
Events in quadrant A644,390511,014
Events in quadrant B613,802509,167
Events in quadrant C640,634493,380
Events in quadrant D253,03692,339

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287350
B0269630
C0244220
D0953170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12001800.666611%
B120012652.208149%
C1200170.058328%
D120011047187.251062%

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 14956 12000 0 0 0.00% 0.00%
B 14956 11997 0 0 0.00% 0.00%
C 14956 12000 0 0 0.00% 0.00%
D 14955 11853 0 0 0.00% 0.00%

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 29 525 8.07 168 157 45.6
A 15 236 492 7.35 168 157 45.6
A 0 30 489 7.28 168 157 45.6
B 2 9 517 10.6 162 154 34.3
B 3 17 435 8.2 162 154 34.3
B 14 254 416 7.65 162 154 34.3
C 1 81 494 7.4 169 157 45.5
C 1 80 492 7.36 169 157 45.5
C 7 221 452 6.48 169 157 45.5
D 6 67 206 6.55 72 65 21.5
D 3 14 193 5.95 72 65 21.5
D 10 113 184 5.53 72 65 21.5

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