ASTROSAT CZTI

Data Quality Report

Orbit 36835

Creation date: 2024-06-27T21:32:10.927215
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_075T01_9000005244_36835cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36835cztM0_level2_quad_clean.evt
Size (bytes)754,093,44052,770,240
Size719.2 MB 50.3 MB
Events in quadrant A2,786,178371,700
Events in quadrant B13,685,030106,129
Events in quadrant C2,901,880371,511
Events in quadrant D3,087,932357,318

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119483
B0444452
C0120092
D0129522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5569200.359131%
B5569504790.626683%
C5569470.843958%
D5569721.292871%

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 7182 5570 8 8 0.11% 0.14%
B 7181 5568 4891 4891 68.11% 87.84%
C 7182 5570 30 30 0.42% 0.54%
D 7182 5570 71 71 0.99% 1.27%

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 250177 1919.3 642 627 130.0
A 14 235 17718 131.44 642 627 130.0
A 13 6 14571 107.24 642 627 130.0
B 12 1 11926497 207777.77 293 286 57.4
B 5 172 205437 3574.13 293 286 57.4
B 5 255 114977 1998.14 293 286 57.4
C 15 214 240438 1651.86 623 627 145.2
C 0 10 154510 1059.98 623 627 145.2
C 14 254 62219 424.26 623 627 145.2
D 13 249 184080 1196.24 624 607 153.4
D 12 233 143140 929.31 624 607 153.4
D 2 153 78018 504.72 624 607 153.4

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