ASTROSAT CZTI

Data Quality Report

Orbit 20220607_T05_009T01_9000005168_level2

Creation date: 2022-06-11T11:01:08.809190
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/AS1T05_009T01_9000005168cztM0_level2_bc.evt modeM0/AS1T05_009T01_9000005168cztM0_level2_quad_clean.evt
Size (bytes)288,267,840121,818,240
Size274.9 MB 116.2 MB
Events in quadrant A1,525,895808,648
Events in quadrant B1,787,157822,951
Events in quadrant C2,707,764821,501
Events in quadrant D2,255,633779,093

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134310
B0146980
C0173730
D0163970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A656290.137153%
B6562741.127705%
C65622433.703139%
D65621882.864980%

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 8535 6563 0 0 0.00% 0.00%
B 8535 6562 13 13 0.15% 0.20%
C 8535 6562 85 85 1.00% 1.30%
D 8535 6562 27 27 0.32% 0.41%

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 140362 1781.17 347 342 78.6
A 8 144 35435 446.41 347 342 78.6
A 13 254 11565 142.77 347 342 78.6
B 5 172 205965 2912.82 351 344 70.6
B 0 213 113225 1599.07 351 344 70.6
B 5 236 49778 700.28 351 344 70.6
C 0 207 645267 7748.28 345 343 83.2
C 15 214 274239 3290.66 345 343 83.2
C 15 208 215517 2585.16 345 343 83.2
D 13 249 225317 2661.32 343 331 84.5
D 12 6 209079 2469.24 343 331 84.5
D 13 171 144441 1704.65 343 331 84.5

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