ASTROSAT CZTI

Data Quality Report

Orbit 20698

Creation date: 2024-06-27T18:18:28.660014
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_229T02_9000003060_20698cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20698cztM0_level2_quad_clean.evt
Size (bytes)665,853,120120,919,680
Size635.0 MB 115.3 MB
Events in quadrant A4,541,184762,356
Events in quadrant B5,179,426764,043
Events in quadrant C4,655,234750,802
Events in quadrant D5,147,852728,265

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193512
B0212862
C0195892
D0213902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9468400.422476%
B94681071.130123%
C9468820.866075%
D9468940.992818%

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 10543 9469 0 0 0.00% 0.00%
B 10543 9469 32 32 0.30% 0.34%
C 10543 9468 0 0 0.00% 0.00%
D 10543 9469 43 43 0.41% 0.45%

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 0 226 10375 38.99 1182 1159 236.4
A 3 137 9392 34.83 1182 1159 236.4
A 12 194 8381 30.55 1182 1159 236.4
B 7 220 335734 1524.34 1175 1151 219.5
B 0 197 163106 737.86 1175 1151 219.5
B 3 64 41816 185.27 1175 1151 219.5
C 14 238 178157 674.66 1134 1142 262.4
C 7 247 43083 159.85 1134 1142 262.4
C 3 233 11163 38.19 1134 1142 262.4
D 1 52 413321 1506.98 1145 1118 273.5
D 5 222 179144 650.85 1145 1118 273.5
D 12 227 66328 238.4 1145 1118 273.5

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