ASTROSAT CZTI

Data Quality Report

Orbit 16099

Creation date: 2024-06-27T17:17:59.321825
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/AS1A04_209T01_9000002378_16099cztM0_level2.evt modeM0/AS1A04_209T01_9000002378_16099cztM0_level2_quad_clean.evt
Size (bytes)86,163,84021,237,120
Size82.2 MB 20.3 MB
Events in quadrant A578,724139,769
Events in quadrant B712,701140,076
Events in quadrant C597,487135,280
Events in quadrant D633,360134,288

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024961
B028910
C025110
D026960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123810.080775%
B1238241.938611%
C123880.646204%
D123890.726979%

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 1239 1239 0 0 0.00% 0.00%
B 1239 1239 14 14 1.13% 1.13%
C 1239 1239 0 0 0.00% 0.00%
D 1239 1239 7 7 0.56% 0.56%

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 15 239 11618 356.45 145 142 32.2
A 15 174 3495 104.15 145 142 32.2
A 12 96 2058 59.51 145 142 32.2
B 7 220 60596 1949.38 148 144 31.0
B 0 229 25634 821.97 148 144 31.0
B 0 189 21816 698.85 148 144 31.0
C 14 238 22525 623.62 144 144 35.9
C 3 233 8926 244.7 144 144 35.9
C 0 207 2079 53.92 144 144 35.9
D 12 235 35956 960.96 144 139 37.3
D 13 172 17016 452.8 144 139 37.3
D 7 38 16171 430.13 144 139 37.3

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