ASTROSAT CZTI

Data Quality Report

Orbit 45460

Creation date: 2024-06-27T23:12:32.574153
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_038T03_9000006088_45460cztM0_level2.fits modeM0/AS1A13_038T03_9000006088_45460cztM0_level2_quad_clean.evt
Size (bytes)174,458,88043,692,480
Size166.4 MB 41.7 MB
Events in quadrant A2,215,675288,647
Events in quadrant B1,281,564307,900
Events in quadrant C1,217,270290,679
Events in quadrant D1,553,253261,898

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083881
B053561
C052531
D063451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24221014.170107%
B2422180.743187%
C2422100.412882%
D2422361.486375%

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 2422 2422 19 19 0.78% 0.78%
B 2422 2422 7 7 0.29% 0.29%
C 2422 2422 6 6 0.25% 0.25%
D 2422 2422 27 27 1.11% 1.11%

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 10 83 1103749 18213.78 283 277 60.6
A 13 248 14841 240.39 283 277 60.6
A 0 243 3743 57.21 283 277 60.6
B 0 199 34230 597.49 289 282 56.8
B 15 201 25632 446.16 289 282 56.8
B 0 171 18594 322.29 289 282 56.8
C 14 254 79143 1182.02 279 281 66.7
C 1 3 35581 529.09 279 281 66.7
C 3 233 9954 144.98 279 281 66.7
D 1 52 225099 3142.12 273 264 71.6
D 11 241 118935 1658.45 273 264 71.6
D 13 249 73236 1019.8 273 264 71.6

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