ASTROSAT CZTI

Data Quality Report

Orbit 04861

Creation date: 2024-06-27T14:48:05.462840
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_002T01_9000000616_04861cztM0_level2.evt modeM0/AS1G05_002T01_9000000616_04861cztM0_level2_quad_clean.evt
Size (bytes)206,182,08032,880,960
Size196.6 MB 31.4 MB
Events in quadrant A1,356,448198,927
Events in quadrant B1,422,088200,215
Events in quadrant C1,345,130200,627
Events in quadrant D1,922,701189,663

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0611
C0611
D0611

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06156229
B06323239
C06134218
D07873218

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172
B0161
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2877642.224539%
B2878531.841557%
C2877521.807438%
D28831495.168228%

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 6281 2899 1 1 0.02% 0.03%
B 6284 2901 0 0 0.00% 0.00%
C 6284 2893 0 0 0.00% 0.00%
D 6285 2905 74 74 1.18% 2.55%

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 8770 116.34 349 340 72.5
A 12 194 3457 43.02 349 340 72.5
A 0 226 3385 42.02 349 340 72.5
B 10 16 25227 362.54 351 342 68.6
B 4 80 18644 266.63 351 342 68.6
B 12 111 6122 84.21 351 342 68.6
C 12 4 3437 38.46 343 343 80.4
C 13 61 2821 30.8 343 343 80.4
C 8 222 1702 16.89 343 343 80.4
D 1 31 375393 4528.21 335 324 82.8
D 13 235 101102 1216.69 335 324 82.8
D 2 136 82922 997.21 335 324 82.8

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