ASTROSAT CZTI

Data Quality Report

Orbit 31824

Creation date: 2024-06-27T20:33:11.376574
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/AS1A10_109T01_9000004646_31824cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31824cztM0_level2_quad_clean.evt
Size (bytes)1,104,171,840157,259,520
Size1.0 GB 150.0 MB
Events in quadrant A5,908,3371,012,940
Events in quadrant B11,744,736977,144
Events in quadrant C7,420,315961,303
Events in quadrant D7,525,563948,874

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254022
B0438392
C0296333
D0305702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12477630.504929%
B124788506.811989%
C124773753.005530%
D124772512.011702%

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 13657 12479 0 0 0.00% 0.00%
B 13658 12480 403 403 2.95% 3.23%
C 13657 12479 64 64 0.47% 0.51%
D 13657 12479 192 192 1.41% 1.54%

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 13 254 22671 69.04 1529 1499 306.6
A 3 137 16047 47.44 1529 1499 306.6
A 0 226 12443 35.69 1529 1499 306.6
B 6 159 3287742 11535.99 1483 1447 284.9
B 4 80 2072609 7270.47 1483 1447 284.9
B 10 245 540754 1893.15 1483 1447 284.9
C 3 233 894396 2611.14 1456 1470 342.0
C 0 10 495924 1445.91 1456 1470 342.0
C 14 238 262385 762.98 1456 1470 342.0
D 8 195 1131360 3234.1 1466 1431 349.4
D 12 233 606250 1731.12 1466 1431 349.4
D 2 250 174730 496.02 1466 1431 349.4

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