ASTROSAT CZTI

Data Quality Report

Orbit 40936

Creation date: 2024-06-27T22:22:25.658421
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_052T04_9000005582_40936cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40936cztM0_level2_quad_clean.evt
Size (bytes)345,548,16090,331,200
Size329.5 MB 86.1 MB
Events in quadrant A2,859,329614,845
Events in quadrant B2,558,498623,414
Events in quadrant C2,815,710591,635
Events in quadrant D4,132,367523,058

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118393
B0114512
C0118962
D0161272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5457120.219901%
B5457360.659703%
C5457741.356056%
D54574117.531611%

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 7280 5458 2 2 0.03% 0.04%
B 7280 5458 20 20 0.27% 0.37%
C 7280 5458 63 63 0.87% 1.15%
D 7280 5458 362 362 4.97% 6.63%

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 506963 4155.49 601 588 121.9
A 2 79 15465 122.09 601 588 121.9
A 7 3 8595 65.71 601 588 121.9
B 5 255 220098 1916.23 592 576 114.6
B 15 35 15672 131.77 592 576 114.6
B 12 111 14364 120.36 592 576 114.6
C 15 214 238374 1765.46 578 582 134.7
C 14 254 153651 1136.44 578 582 134.7
C 0 10 127223 940.23 578 582 134.7
D 12 233 624610 4491.2 567 549 139.0
D 2 249 541617 3893.92 567 549 139.0
D 13 249 407655 2929.83 567 549 139.0

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