ASTROSAT CZTI

Data Quality Report

Orbit 44185

Creation date: 2024-06-27T23:00:19.063240
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_074T12_9000005960_44185cztM0_level2.fits modeM0/AS1A13_074T12_9000005960_44185cztM0_level2_quad_clean.evt
Size (bytes)250,963,20029,473,920
Size239.3 MB 28.1 MB
Events in quadrant A2,103,290220,309
Events in quadrant B3,587,776103,231
Events in quadrant C1,313,958230,817
Events in quadrant D2,132,999197,733

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076511
B0119971
C052391
D077111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193021911.347150%
B1930113558.808290%
C1930351.813472%
D19301809.326425%

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 1930 1930 156 156 8.08% 8.08%
B 1930 1930 990 990 51.30% 51.30%
C 1930 1930 33 33 1.71% 1.71%
D 1930 1930 212 212 10.98% 10.98%

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 15 223 650634 14230.85 214 211 45.7
A 10 83 581411 12716.3 214 211 45.7
A 13 248 11259 241.72 214 211 45.7
B 0 200 2620983 83953.76 152 149 31.2
B 5 235 108403 3467.72 152 149 31.2
B 0 219 106489 3406.41 152 149 31.2
C 3 233 287913 5608.89 212 213 51.3
C 14 254 145993 2842.07 212 213 51.3
C 2 14 10586 202.23 212 213 51.3
D 1 52 518900 9814.41 204 196 52.9
D 12 233 308860 5840.24 204 196 52.9
D 1 47 111901 2113.57 204 196 52.9

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