ASTROSAT CZTI

Data Quality Report

Orbit 44821

Creation date: 2024-06-27T23:06:52.928444
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_017T01_9000006028_44821cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44821cztM0_level2_quad_clean.evt
Size (bytes)344,701,44052,793,280
Size328.7 MB 50.3 MB
Events in quadrant A3,532,960346,098
Events in quadrant B1,802,427400,360
Events in quadrant C1,655,286393,172
Events in quadrant D5,514,045227,223

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130201
B074861
C070941
D0186461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A326851615.789474%
B32671434.377104%
C3267611.867156%
D3267131340.189777%

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 4498 3269 331 331 7.36% 10.13%
B 4497 3268 36 36 0.80% 1.10%
C 4497 3268 6 6 0.13% 0.18%
D 4497 3268 1150 1150 25.57% 35.19%

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 1039536 13480.29 368 361 77.1
A 15 223 860540 11158.34 368 361 77.1
A 13 248 175336 2269.8 368 361 77.1
B 15 36 122560 1505.69 401 389 81.1
B 5 255 24845 301.41 401 389 81.1
B 0 186 11877 141.58 401 389 81.1
C 12 2 24996 262.21 399 402 93.8
C 3 233 20177 210.83 399 402 93.8
C 2 14 17989 187.5 399 402 93.8
D 13 187 2770330 30499.39 350 337 90.8
D 1 52 659866 7261.83 350 337 90.8
D 13 174 206822 2273.53 350 337 90.8

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