ASTROSAT CZTI

Data Quality Report

Orbit 42867

Creation date: 2024-06-27T22:45:10.597485
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_138T01_9000005828_42867cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42867cztM0_level2_quad_clean.evt
Size (bytes)319,259,52082,923,840
Size304.5 MB 79.1 MB
Events in quadrant A2,991,362549,812
Events in quadrant B2,323,953575,230
Events in quadrant C2,896,754546,909
Events in quadrant D3,223,163494,776

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118982
B0102812
C0117452
D0128882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4909851.731514%
B490960.122224%
C49091262.566714%
D49091633.320432%

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 7031 4910 69 69 0.98% 1.41%
B 7031 4910 1 1 0.01% 0.02%
C 7031 4910 129 129 1.83% 2.63%
D 7031 4910 156 156 2.22% 3.18%

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 534676 4869.82 533 523 109.7
A 15 237 284662 2590.47 533 523 109.7
A 12 189 77322 700.17 533 523 109.7
B 0 229 105794 995.87 539 525 105.7
B 0 245 43772 409.13 539 525 105.7
B 5 255 28300 262.76 539 525 105.7
C 14 254 262398 2107.43 525 528 124.3
C 15 214 197994 1589.13 525 528 124.3
C 15 111 124998 1001.69 525 528 124.3
D 12 6 859709 6749.92 515 501 127.3
D 2 249 122473 958.21 515 501 127.3
D 1 52 51521 400.81 515 501 127.3

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