ASTROSAT CZTI

Data Quality Report

Orbit 41740

Creation date: 2024-06-27T22:32:18.717481
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_077T11_9000005696_41740cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41740cztM0_level2_quad_clean.evt
Size (bytes)395,565,12092,819,520
Size377.2 MB 88.5 MB
Events in quadrant A3,197,574623,697
Events in quadrant B2,713,832638,187
Events in quadrant C3,769,947583,664
Events in quadrant D4,512,313561,236

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130432
B0120922
C0147632
D0174732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5775831.437229%
B5775390.675325%
C57742884.987877%
D57741131.957049%

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 7117 5776 79 79 1.11% 1.37%
B 7116 5774 25 25 0.35% 0.43%
C 7115 5773 287 287 4.03% 4.97%
D 7115 5773 161 161 2.26% 2.79%

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 552744 4250.25 626 613 129.9
A 15 223 209674 1609.33 626 613 129.9
A 13 6 8806 63.07 626 613 129.9
B 5 255 169804 1368.94 626 608 123.6
B 0 245 42098 335.69 626 608 123.6
B 12 111 15734 122.38 626 608 123.6
C 0 10 814856 5858.73 592 597 139.0
C 14 254 383073 2751.98 592 597 139.0
C 15 214 229499 1646.99 592 597 139.0
D 12 79 1588729 10512.76 609 594 151.1
D 2 249 403110 2664.48 609 594 151.1
D 1 47 45327 296.11 609 594 151.1

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