ASTROSAT CZTI

Data Quality Report

Orbit 20230521_T05_105T01_9000005658_level2

Creation date: 2023-05-23T16:16:48.911832
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/AS1T05_105T01_9000005658cztM0_level2.fits modeM0/AS1T05_105T01_9000005658cztM0_level2_quad_clean.evt
Size (bytes)844,297,920937,837,440
Size805.2 MB 894.4 MB
Events in quadrant A5,132,6165,831,028
Events in quadrant B4,911,1885,832,939
Events in quadrant C4,901,8645,503,419
Events in quadrant D4,037,9864,657,295

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03750
B03750
C03750
D03750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019640
B019640
C019640
D019640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02051620
B02048550
C02157110
D03264420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A959782420.252141%
B959788780.914793%
C9597827032.816270%
D959781245612.977974%

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 133657 95966 0 0 0.00% 0.00%
B 133657 95962 0 0 0.00% 0.00%
C 133657 95625 0 0 0.00% 0.00%
D 133657 95569 0 0 0.00% 0.00%

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 7 110 4351 9.15 1337 1252 338.6
A 9 19 4281 8.95 1337 1252 338.6
A 0 29 4074 8.33 1337 1252 338.6
B 2 9 4291 12.14 1296 1233 251.9
B 3 80 3427 8.71 1296 1233 251.9
B 5 128 3424 8.7 1296 1233 251.9
C 1 81 4115 8.73 1294 1207 332.9
C 1 80 3899 8.08 1294 1207 332.9
C 3 203 3853 7.95 1294 1207 332.9
D 7 3 3125 6.66 1154 1049 311.4
D 10 189 2909 5.97 1154 1049 311.4
D 10 113 2878 5.87 1154 1049 311.4

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