ASTROSAT CZTI

Data Quality Report

Orbit 12803

Creation date: 2024-06-27T16:32:32.793961
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/AS1G08_071T01_9000001888_12803cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12803cztM0_level2_quad_clean.evt
Size (bytes)1,016,481,600180,976,320
Size969.4 MB 172.6 MB
Events in quadrant A6,466,5921,156,257
Events in quadrant B9,542,1341,108,211
Events in quadrant C6,088,2971,167,447
Events in quadrant D7,764,5801,107,012

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284184
B0375493
C0278343
D0326133

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136291290.946511%
B1362911768.628659%
C13629960.704380%
D136296054.439064%

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 15410 13635 0 0 0.00% 0.00%
B 15410 13635 640 640 4.15% 4.69%
C 15410 13635 0 0 0.00% 0.00%
D 15410 13635 371 371 2.41% 2.72%

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 12 189 243259 749.88 1596 1560 322.3
A 8 15 76496 232.49 1596 1560 322.3
A 0 226 13970 38.5 1596 1560 322.3
B 4 239 2331789 7999.67 1526 1486 291.3
B 10 245 581183 1990.04 1526 1486 291.3
B 0 219 388430 1328.34 1526 1486 291.3
C 8 128 12183 29.51 1554 1562 359.9
C 13 61 11501 27.62 1554 1562 359.9
C 5 96 7461 16.39 1554 1562 359.9
D 1 52 1040699 2850.04 1519 1473 364.6
D 8 195 736620 2016.12 1519 1473 364.6
D 10 253 67101 179.98 1519 1473 364.6

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