ASTROSAT CZTI

Data Quality Report

Orbit 40385

Creation date: 2024-06-27T22:15:29.156330
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_056T02_9000005538_40385cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40385cztM0_level2_quad_clean.evt
Size (bytes)1,291,996,800311,040,000
Size1.2 GB 296.6 MB
Events in quadrant A11,040,9202,158,714
Events in quadrant B10,045,3592,192,587
Events in quadrant C9,440,4922,120,305
Events in quadrant D15,775,0121,590,525

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0447046
B0431965
C0401685
D0604105

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04020
B04020
C04020
D04020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A196631940.986625%
B196632381.210395%
C19663360.183085%
D19663349417.769415%

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 25483 19667 103 103 0.40% 0.52%
B 25483 19667 129 129 0.51% 0.66%
C 25483 19667 25 25 0.10% 0.13%
D 25483 19665 1034 1034 4.06% 5.26%

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 1585944 3609.95 2174 2131 438.7
A 13 248 668611 1519.1 2174 2131 438.7
A 2 79 190445 429.22 2174 2131 438.7
B 4 171 368536 881.97 2158 2098 415.5
B 4 170 338441 809.54 2158 2098 415.5
B 3 112 283222 676.63 2158 2098 415.5
C 15 214 845298 1709.31 2134 2153 493.3
C 12 249 161951 323.96 2134 2153 493.3
C 14 254 48946 94.86 2134 2153 493.3
D 12 227 5052686 10702.53 1939 1885 471.9
D 2 250 750203 1585.67 1939 1885 471.9
D 13 171 724562 1531.34 1939 1885 471.9

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