ASTROSAT CZTI

Data Quality Report

Orbit 28755

Creation date: 2024-06-27T19:55:51.624591
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/AS1A10_123T08_9000004126_28755cztM0_level2.evt modeM0/AS1A10_123T08_9000004126_28755cztM0_level2_quad_clean.evt
Size (bytes)224,305,92010,676,160
Size213.9 MB 10.2 MB
Events in quadrant A1,141,85343,649
Events in quadrant B1,106,42843,823
Events in quadrant C1,973,94040,040
Events in quadrant D2,424,60940,408

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047151
B045711
C073841
D087381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2127210.987306%
B2127331.551481%
C21271306.111895%
D21272079.732017%

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 2127 2127 3 3 0.14% 0.14%
B 2127 2127 6 6 0.28% 0.28%
C 2127 2127 1 1 0.05% 0.05%
D 2127 2127 193 193 9.07% 9.07%

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 15 174 105989 1881.95 265 257 56.2
A 12 16 9734 168.68 265 257 56.2
A 13 254 4163 69.52 265 257 56.2
B 5 255 36932 709.47 262 256 51.7
B 4 80 21904 418.76 262 256 51.7
B 10 245 8601 161.43 262 256 51.7
C 3 233 899853 14776.77 253 253 60.9
C 14 238 43649 712.82 253 253 60.9
C 0 207 25256 410.7 253 253 60.9
D 8 195 887358 14152.78 253 245 62.7
D 1 52 478387 7628.16 253 245 62.7
D 2 250 47184 748.85 253 245 62.7

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