ASTROSAT CZTI

Data Quality Report

Orbit 33766

Creation date: 2024-06-27T20:52:25.910024
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/AS1A11_086T01_9000004820_33766cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33766cztM0_level2_quad_clean.evt
Size (bytes)646,476,48058,783,680
Size616.5 MB 56.1 MB
Events in quadrant A8,538,716326,676
Events in quadrant B2,987,054367,941
Events in quadrant C3,156,819362,986
Events in quadrant D4,528,377340,666

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292153
B0121822
C0124262
D0170522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5448183033.590308%
B5448601.101322%
C5448420.770925%
D54482073.799559%

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 7150 5449 1493 1493 20.88% 27.40%
B 7150 5449 41 41 0.57% 0.75%
C 7150 5449 41 41 0.57% 0.75%
D 7150 5449 206 206 2.88% 3.78%

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 15 169 4455256 37050.95 594 581 120.2
A 15 237 1757893 14616.12 594 581 120.2
A 13 6 15742 126.1 594 581 120.2
B 5 172 206716 1630.65 652 636 126.4
B 0 219 42239 329.19 652 636 126.4
B 5 255 38381 298.66 652 636 126.4
C 15 214 239099 1619.49 638 642 147.2
C 0 10 129101 872.43 638 642 147.2
C 9 187 97201 655.78 638 642 147.2
D 8 195 969598 6219.23 634 615 155.8
D 2 249 431740 2767.09 634 615 155.8
D 1 47 209152 1338.45 634 615 155.8

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