ASTROSAT CZTI

Data Quality Report

Orbit 19990

Creation date: 2024-06-27T18:09:46.326429
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/AS1A06_002T02_9000002982_19990cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_19990cztM0_level2_quad_clean.evt
Size (bytes)531,599,04083,301,120
Size507.0 MB 79.4 MB
Events in quadrant A3,709,601529,679
Events in quadrant B4,081,031533,185
Events in quadrant C3,773,198509,909
Events in quadrant D4,106,426507,607

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151262
B0164882
C0152302
D0164252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63361902.998737%
B63362063.251263%
C63362113.330177%
D63361722.714646%

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 7601 6336 48 48 0.63% 0.76%
B 7600 6335 28 28 0.37% 0.44%
C 7600 6335 4 4 0.05% 0.06%
D 7600 6335 69 69 0.91% 1.09%

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 14 238 201395 1134.53 887 871 176.7
A 14 254 93687 525.14 887 871 176.7
A 0 226 7762 38.99 887 871 176.7
B 0 197 257471 1567.76 878 860 163.7
B 7 220 253155 1541.39 878 860 163.7
B 0 245 31220 185.48 878 860 163.7
C 3 233 182974 928.06 852 861 196.2
C 14 238 135880 688.06 852 861 196.2
C 0 207 125640 635.88 852 861 196.2
D 1 52 668217 3169.07 875 852 210.6
D 12 218 71391 334.96 875 852 210.6
D 2 234 25141 115.34 875 852 210.6

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