ASTROSAT CZTI

Data Quality Report

Orbit 39893

Creation date: 2024-06-27T22:10:01.863292
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/AS1A12_037T07_9000005504_39893cztM0_level2.fits modeM0/AS1A12_037T07_9000005504_39893cztM0_level2_quad_clean.evt
Size (bytes)952,626,240263,903,040
Size908.5 MB 251.7 MB
Events in quadrant A8,572,9471,776,152
Events in quadrant B8,333,4291,801,013
Events in quadrant C7,645,3991,739,046
Events in quadrant D9,469,2781,569,271

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0353934
B0355713
C0327313
D0394913

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16029420.262025%
B160293252.027575%
C16029190.118535%
D160294262.657683%

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 22541 16033 15 15 0.07% 0.09%
B 22541 16033 225 225 1.00% 1.40%
C 22541 16033 10 10 0.04% 0.06%
D 22541 16033 362 362 1.61% 2.26%

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 10 83 1226491 3376.08 1799 1765 362.8
A 6 10 95831 259.3 1799 1765 362.8
A 15 223 83815 226.18 1799 1765 362.8
B 4 171 635465 1872.62 1763 1713 338.4
B 0 229 254547 747.08 1763 1713 338.4
B 0 183 131315 382.95 1763 1713 338.4
C 15 214 661164 1641.42 1743 1752 401.7
C 14 254 54654 131.68 1743 1752 401.7
C 0 10 40312 95.98 1743 1752 401.7
D 12 227 1464197 3431.13 1736 1686 426.2
D 5 32 214991 500.42 1736 1686 426.2
D 13 171 202894 472.04 1736 1686 426.2

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