ASTROSAT CZTI

Data Quality Report

Orbit 20160808_G05_251T02_9000000588_level2

Creation date: 2025-11-04T17:44:24.750563
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/AS1G05_251T02_9000000588cztM0_level2.fits modeM0/AS1G05_251T02_9000000588cztM0_level2_quad_clean.evt
Size (bytes)442,621,440626,757,120
Size422.1 MB 597.7 MB
Events in quadrant A2,694,0304,275,782
Events in quadrant B2,623,2684,304,234
Events in quadrant C2,698,6384,222,269
Events in quadrant D1,862,7562,664,106

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010480
B010460
C010460
D010400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01089010
B01090810
C01061150
D02461260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5125213332.600874%
B5125911822.305937%
C512539271.808675%
D512101764634.458114%

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 61168 51359 0 0 0.00% 0.00%
B 61168 51370 0 0 0.00% 0.00%
C 61168 51383 0 0 0.00% 0.00%
D 61168 51055 0 0 0.00% 0.00%

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 0 29 2719 11.45 698 651 180.5
A 14 188 2716 11.44 698 651 180.5
A 14 204 2417 9.78 698 651 180.5
B 2 9 2311 11.75 693 658 140.6
B 12 226 1894 8.79 693 658 140.6
B 2 8 1833 8.35 693 658 140.6
C 1 80 2106 7.7 712 661 187.6
C 1 81 1979 7.03 712 661 187.6
C 12 241 1896 6.58 712 661 187.6
D 4 160 1391 6.41 530 481 142.0
D 6 231 1379 6.32 530 481 142.0
D 1 19 1362 6.21 530 481 142.0

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