ASTROSAT CZTI

Data Quality Report

Orbit 46149

Creation date: 2024-06-27T23:19:42.369328
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/AS1A13_098T02_9000006174_46149cztM0_level2.fits modeM0/AS1A13_098T02_9000006174_46149cztM0_level2_quad_clean.evt
Size (bytes)935,271,360157,680,000
Size891.9 MB 150.4 MB
Events in quadrant A9,298,1771,054,750
Events in quadrant B10,573,354957,274
Events in quadrant C5,031,8991,097,438
Events in quadrant D8,900,657933,330

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0334631
B0385251
C0225571
D0337521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105605705.397727%
B10561198018.748225%
C105612192.073667%
D1056110359.800208%

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 10790 10561 18 18 0.17% 0.17%
B 10790 10561 1413 1413 13.10% 13.38%
C 10791 10562 29 29 0.27% 0.27%
D 10791 10562 639 639 5.92% 6.05%

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 10 83 4493710 17727.71 1209 1182 253.4
A 10 255 44723 171.81 1209 1182 253.4
A 13 248 41653 159.7 1209 1182 253.4
B 10 246 3256961 14815.75 1091 1057 219.8
B 3 112 2686024 12217.75 1091 1057 219.8
B 0 186 125821 567.73 1091 1057 219.8
C 12 2 200877 699.95 1204 1207 285.3
C 2 14 86300 298.3 1204 1207 285.3
C 3 233 25765 86.09 1204 1207 285.3
D 5 235 2550559 8551.47 1167 1127 298.1
D 13 138 725720 2430.47 1167 1127 298.1
D 1 52 221509 739.22 1167 1127 298.1

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