ASTROSAT CZTI

Data Quality Report

Orbit 37992

Creation date: 2024-06-27T21:47:03.686687
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_082T01_9000005356_37992cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_37992cztM0_level2_quad_clean.evt
Size (bytes)993,314,880187,234,560
Size947.3 MB 178.6 MB
Events in quadrant A9,928,7841,160,810
Events in quadrant B9,510,6661,166,730
Events in quadrant C7,776,8101,181,384
Events in quadrant D8,336,5211,075,406

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396464
B0385663
C0329533
D0353923

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157102011.279440%
B157106193.940165%
C15710350.222788%
D157101080.687460%

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 19769 15713 153 153 0.77% 0.97%
B 19769 15713 452 452 2.29% 2.88%
C 19769 15713 26 26 0.13% 0.17%
D 19769 15713 78 78 0.39% 0.50%

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 16 1051459 2943.14 1773 1736 356.7
A 10 83 952059 2664.45 1773 1736 356.7
A 15 222 740858 2072.3 1773 1736 356.7
B 5 172 1236127 3694.63 1755 1706 334.1
B 5 184 775578 2316.2 1755 1706 334.1
B 4 232 140580 415.65 1755 1706 334.1
C 15 214 654916 1608.98 1743 1756 405.9
C 1 23 164352 400.53 1743 1756 405.9
C 14 254 59646 142.6 1743 1756 405.9
D 7 223 418782 984.89 1733 1685 423.5
D 1 52 280927 659.38 1733 1685 423.5
D 2 250 157512 367.96 1733 1685 423.5

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