ASTROSAT CZTI

Data Quality Report

Orbit 50608

Creation date: 2025-02-05T03:32:07.261269
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/AS1T05_239T01_9000006444_50608cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50608cztM0_level2_quad_clean.evt
Size (bytes)845,095,68075,142,080
Size805.9 MB 71.7 MB
Events in quadrant A4,661,365574,681
Events in quadrant B8,796,220534,663
Events in quadrant C4,313,872556,074
Events in quadrant D13,034,351178,828

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179861
B0304491
C0169341
D0429933

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61643425.548345%
B6165144923.503650%
C61653685.969181%
D6164460474.691759%

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 7349 6165 219 219 2.98% 3.55%
B 7350 6165 1059 1059 14.41% 17.18%
C 7350 6166 300 300 4.08% 4.87%
D 7349 6164 4065 4065 55.31% 65.95%

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 80 633539 3986.73 641 625 158.8
A 15 174 439498 2764.46 641 625 158.8
A 8 38 224486 1410.1 641 625 158.8
B 4 170 3847511 29855.15 609 589 128.9
B 5 32 1048348 8131.44 609 589 128.9
B 7 0 401856 3114.15 609 589 128.9
C 15 158 625956 3606.21 633 630 173.4
C 13 3 598331 3446.9 633 630 173.4
C 12 247 136659 784.47 633 630 173.4
D 2 226 10359461 78919.67 464 446 131.3
D 2 249 124643 946.19 464 446 131.3
D 8 246 114647 870.04 464 446 131.3

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