ASTROSAT CZTI

Data Quality Report

Orbit 09959

Creation date: 2024-06-27T15:52:59.113682
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_008T02_9000001422_09959cztM0_level2.evt modeM0/AS1A03_008T02_9000001422_09959cztM0_level2_quad_clean.evt
Size (bytes)915,065,280200,790,720
Size872.7 MB 191.5 MB
Events in quadrant A5,743,2961,317,996
Events in quadrant B5,982,0321,363,499
Events in quadrant C5,570,5431,340,229
Events in quadrant D9,608,3211,233,677

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02588
B02584
C025812
D025820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0391
C0390
D0391

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266511208
B0272331237
C0262011212
D0398963086

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119801551.293823%
B120001721.433333%
C119811140.951507%
D117795344.533492%

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 16474 12423 8 8 0.05% 0.06%
B 16474 12442 4 4 0.02% 0.03%
C 16474 12457 0 0 0.00% 0.00%
D 16474 12289 365 365 2.22% 2.97%

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 14 254 115496 392.78 1443 1415 290.4
A 15 174 49947 167.1 1443 1415 290.4
A 8 15 21000 67.43 1443 1415 290.4
B 4 81 82699 296.9 1468 1437 273.7
B 4 239 57192 203.71 1468 1437 273.7
B 0 219 51309 182.22 1468 1437 273.7
C 13 61 10647 28.63 1424 1432 321.8
C 14 67 6366 15.33 1424 1432 321.8
C 12 4 5935 13.99 1424 1432 321.8
D 12 233 1459405 4261.4 1360 1325 342.2
D 1 52 1002834 2927.02 1360 1325 342.2
D 8 195 634237 1849.76 1360 1325 342.2

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