ASTROSAT CZTI

Data Quality Report

Orbit 48339

Creation date: 2024-09-05T15:27:13.564786
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/AS1A13_029T01_9000006422_48339cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48339cztM0_level2_quad_clean.evt
Size (bytes)1,244,905,920242,017,920
Size1.2 GB 230.8 MB
Events in quadrant A16,099,3781,636,564
Events in quadrant B8,754,0841,699,326
Events in quadrant C6,987,7491,638,329
Events in quadrant D13,008,6501,252,792

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0582021
B0369602
C0327991
D0504371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159535013.140475%
B159522701.692578%
C15953530.332226%
D15953209913.157400%

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 16428 15954 50 50 0.30% 0.31%
B 16427 15953 92 92 0.56% 0.58%
C 16428 15954 11 11 0.07% 0.07%
D 16428 15954 1710 1710 10.41% 10.72%

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 9205572 25318.9 1738 1703 363.5
A 13 248 103614 280.35 1738 1703 363.5
A 0 31 63849 170.96 1738 1703 363.5
B 5 79 602170 1749.76 1739 1682 343.2
B 4 21 599319 1741.45 1739 1682 343.2
B 5 255 358793 1040.58 1739 1682 343.2
C 15 208 183449 448.67 1722 1732 405.0
C 12 2 54074 129.23 1722 1732 405.0
C 12 249 15213 33.29 1722 1732 405.0
D 2 165 5238080 12809.46 1627 1576 408.8
D 13 29 482454 1176.32 1627 1576 408.8
D 12 128 237051 576.01 1627 1576 408.8

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