ASTROSAT CZTI

Data Quality Report

Orbit 42656

Creation date: 2024-06-27T22:42:41.265553
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_174T01_9000005820_42656cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42656cztM0_level2_quad_clean.evt
Size (bytes)780,045,120166,331,520
Size743.9 MB 158.6 MB
Events in quadrant A6,041,3761,154,366
Events in quadrant B5,743,6161,167,022
Events in quadrant C5,125,6771,144,287
Events in quadrant D11,129,705825,140

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245683
B0245073
C0219433
D0404943

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10759900.836509%
B107592031.886792%
C10759170.158007%
D10759234521.795706%

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 13385 10761 45 45 0.34% 0.42%
B 13385 10761 130 130 0.97% 1.21%
C 13385 10761 14 14 0.10% 0.13%
D 13385 10761 2175 2175 16.25% 20.21%

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 1012975 4171.04 1176 1147 242.6
A 13 248 419301 1723.75 1176 1147 242.6
A 2 79 23091 90.46 1176 1147 242.6
B 10 246 927584 4094.07 1166 1132 226.3
B 0 245 103783 453.62 1166 1132 226.3
B 3 112 67760 294.43 1166 1132 226.3
C 15 214 441151 1625.73 1160 1167 270.6
C 14 254 91611 334.19 1160 1167 270.6
C 9 54 39534 141.77 1160 1167 270.6
D 12 233 5122660 20298.23 1021 990 252.3
D 2 249 996588 3945.76 1021 990 252.3
D 12 6 474791 1877.77 1021 990 252.3

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