ASTROSAT CZTI

Data Quality Report

Orbit 39166

Creation date: 2024-06-27T22:01:18.654891
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_054T02_9000005444_39166cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39166cztM0_level2_quad_clean.evt
Size (bytes)539,487,36096,001,920
Size514.5 MB 91.6 MB
Events in quadrant A3,185,130694,976
Events in quadrant B2,732,922707,275
Events in quadrant C3,240,583668,295
Events in quadrant D10,331,087403,844

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133023
B0124812
C0136282
D0349832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6182150.242640%
B6182130.210288%
C6182621.002912%
D6182230737.318020%

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 9227 6184 9 9 0.10% 0.15%
B 9227 6184 0 0 0.00% 0.00%
C 9227 6184 44 44 0.48% 0.71%
D 9227 6184 2071 2071 22.44% 33.49%

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 473333 3391.57 689 674 139.4
A 13 248 24388 170.16 689 674 139.4
A 13 6 10725 72.12 689 674 139.4
B 12 111 16988 123.31 683 664 132.4
B 5 172 16821 122.04 683 664 132.4
B 11 111 15095 109.01 683 664 132.4
C 9 187 388316 2491.22 664 667 155.6
C 15 214 258158 1654.76 664 667 155.6
C 13 61 4493 24.59 664 667 155.6
D 12 235 5610316 42381.05 533 516 132.4
D 5 222 1482497 11196.11 533 516 132.4
D 12 227 611541 4616.19 533 516 132.4

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