ASTROSAT CZTI

Data Quality Report

Orbit 16646

Creation date: 2024-06-27T17:25:24.042789
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/AS1A05_002T07_9000002458_16646cztM0_level2.evt modeM0/AS1A05_002T07_9000002458_16646cztM0_level2_quad_clean.evt
Size (bytes)234,227,52061,940,160
Size223.4 MB 59.1 MB
Events in quadrant A1,605,237420,534
Events in quadrant B1,761,006431,892
Events in quadrant C1,741,746404,439
Events in quadrant D1,769,968394,930

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067162
B072231
C072011
D072851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3150762.412698%
B3150993.142857%
C31501043.301587%
D31501003.174603%

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 4466 3152 0 0 0.00% 0.00%
B 4466 3152 6 6 0.13% 0.19%
C 4466 3152 0 0 0.00% 0.00%
D 4466 3152 30 30 0.67% 0.95%

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 12 96 7482 85.22 413 404 83.1
A 0 226 3694 39.61 413 404 83.1
A 12 194 3056 31.93 413 404 83.1
B 15 35 49977 625.67 416 405 79.2
B 4 216 28137 350.02 416 405 79.2
B 6 36 22512 279.02 416 405 79.2
C 3 233 129557 1400.94 397 399 92.2
C 14 238 62589 674.56 397 399 92.2
C 13 61 2971 27.9 397 399 92.2
D 1 52 215510 2228.19 398 386 96.5
D 5 222 39330 403.37 398 386 96.5
D 2 234 14004 141.05 398 386 96.5

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