ASTROSAT CZTI

Data Quality Report

Orbit 04965

Creation date: 2024-06-27T14:49:28.764346
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/AS1G05_158T01_9000000630_04965cztM0_level2.evt modeM0/AS1G05_158T01_9000000630_04965cztM0_level2_quad_clean.evt
Size (bytes)110,810,88025,899,840
Size105.7 MB 24.7 MB
Events in quadrant A746,982172,662
Events in quadrant B795,013175,440
Events in quadrant C722,521171,691
Events in quadrant D993,807160,000

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029852
B031471
C029501
D038391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1394171.219512%
B139470.502152%
C139430.215208%
D1394735.236729%

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 1394 1394 2 2 0.14% 0.14%
B 1394 1394 0 0 0.00% 0.00%
C 1394 1394 2 2 0.14% 0.14%
D 1394 1394 66 66 4.73% 4.73%

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 50 9023 219.26 190 187 40.3
A 13 251 2132 48.27 190 187 40.3
A 12 194 1961 44.02 190 187 40.3
B 15 54 25722 652.8 190 185 39.1
B 15 204 23149 587.03 190 185 39.1
B 0 183 4664 114.5 190 185 39.1
C 1 16 12382 281.33 181 181 43.4
C 13 61 1515 30.76 181 181 43.4
C 14 67 812 14.55 181 181 43.4
D 2 33 185921 3860.51 183 177 48.1
D 2 136 50929 1054.83 183 177 48.1
D 10 15 16367 336.49 183 177 48.1

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