ASTROSAT CZTI

Data Quality Report

Orbit 20240209_A13_023T05_9000006062_level2

Creation date: 2024-02-12T16:17:04.231239
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_023T05_9000006062cztM0_level2.fits modeM0/AS1A13_023T05_9000006062cztM0_level2_quad_clean.evt
Size (bytes)355,008,960273,833,280
Size338.6 MB 261.1 MB
Events in quadrant A2,084,7441,443,528
Events in quadrant B2,089,7401,543,340
Events in quadrant C2,158,0881,453,147
Events in quadrant D1,801,9961,235,279

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07740
B07740
C07740
D07740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01258500
B0789580
C0817940
D01083330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3809515203.990025%
B380953470.910881%
C380953941.034256%
D3809521045.523035%

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 45765 38078 0 0 0.00% 0.00%
B 45765 38093 0 0 0.00% 0.00%
C 45765 38091 0 0 0.00% 0.00%
D 45765 38076 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 15 236 1748 9.02 542 508 137.5
A 7 110 1665 8.41 542 508 137.5
A 0 29 1601 7.95 542 508 137.5
B 2 9 1905 12.55 549 521 110.3
B 2 8 1501 8.88 549 521 110.3
B 3 17 1484 8.73 549 521 110.3
C 1 81 1657 7.51 571 531 149.8
C 1 80 1594 7.09 571 531 149.8
C 3 202 1530 6.67 571 531 149.8
D 10 189 1395 6.56 515 469 141.1
D 7 3 1305 5.93 515 469 141.1
D 6 38 1298 5.88 515 469 141.1

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