ASTROSAT CZTI

Data Quality Report

Orbit 46672

Creation date: 2024-06-27T23:26:18.420912
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_092T18_9000006248_46672cztM0_level2.fits modeM0/AS1A13_092T18_9000006248_46672cztM0_level2_quad_clean.evt
Size (bytes)955,252,800182,021,760
Size911.0 MB 173.6 MB
Events in quadrant A11,335,7961,220,318
Events in quadrant B7,664,6211,210,596
Events in quadrant C5,185,7331,205,595
Events in quadrant D10,258,3861,053,517

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0418282
B0309902
C0244852
D0387237

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118553112.623366%
B118555394.546605%
C11856440.371120%
D118559207.760439%

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 13325 11857 48 48 0.36% 0.40%
B 13325 11857 270 270 2.03% 2.28%
C 13326 11858 19 19 0.14% 0.16%
D 13324 11856 772 772 5.79% 6.51%

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 6280948 24075.74 1263 1238 260.8
A 15 235 38086 141.27 1263 1238 260.8
A 9 191 23104 83.83 1263 1238 260.8
B 4 171 1821309 7500.26 1246 1208 242.7
B 5 255 227914 934.21 1246 1208 242.7
B 0 189 208831 855.57 1246 1208 242.7
C 3 233 78625 262.32 1252 1262 294.9
C 12 250 75104 250.38 1252 1262 294.9
C 15 208 56234 186.4 1252 1262 294.9
D 8 176 2219768 7312.01 1216 1180 303.4
D 1 52 1270702 4184.09 1216 1180 303.4
D 12 128 498803 1640.06 1216 1180 303.4

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