ASTROSAT CZTI

Data Quality Report

Orbit 09253

Creation date: 2024-06-27T15:43:15.196567
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/AS1A03_091T02_9000001292_09253cztM0_level2.evt modeM0/AS1A03_091T02_9000001292_09253cztM0_level2_quad_clean.evt
Size (bytes)206,159,04032,313,600
Size196.6 MB 30.8 MB
Events in quadrant A1,713,543193,214
Events in quadrant B1,494,692191,989
Events in quadrant C1,388,841184,945
Events in quadrant D1,428,999183,044

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100132976
B091322632
C089792590
D092452700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043
B042
C043
D054

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08828
B08826
C08822
D08836

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3137792.518330%
B3175160.503937%
C3156150.475285%
D3172140.441362%

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 4448 3748 49 49 1.10% 1.31%
B 4448 3789 1 1 0.02% 0.03%
C 4447 3797 0 0 0.00% 0.00%
D 4445 3777 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 8 5 291209 3792.71 361 353 76.7
A 1 162 17946 229.41 361 353 76.7
A 15 174 5351 65.17 361 353 76.7
B 0 214 19644 265.43 370 362 72.6
B 0 187 15296 205.58 370 362 72.6
B 4 173 10314 137.0 370 362 72.6
C 9 68 7037 79.88 353 354 83.7
C 13 61 2684 27.85 353 354 83.7
C 8 222 1895 18.42 353 354 83.7
D 1 52 25681 275.17 353 343 92.1
D 2 136 23501 251.49 353 343 92.1
D 7 71 15203 161.38 353 343 92.1

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