ASTROSAT CZTI

Data Quality Report

Orbit 50527

Creation date: 2025-01-30T18:08:59.950718
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_50527cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50527cztM0_level2_quad_clean.evt
Size (bytes)1,018,635,84079,960,320
Size971.4 MB 76.3 MB
Events in quadrant A7,454,210537,373
Events in quadrant B4,281,221701,431
Events in quadrant C11,572,898417,421
Events in quadrant D13,853,744272,475

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268680
B0173720
C0393111
D0459910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7060140419.886686%
B70611922.719162%
C7060267437.875354%
D7060398056.373938%

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 7060 7060 1150 1150 16.29% 16.29%
B 7061 7061 118 118 1.67% 1.67%
C 7060 7060 2271 2271 32.17% 32.17%
D 7060 7057 3743 3743 53.02% 53.04%

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 12 250 1995343 11520.45 693 676 173.1
A 4 78 942496 5439.6 693 676 173.1
A 7 221 391348 2256.37 693 676 173.1
B 7 0 313662 1978.91 735 708 158.1
B 1 255 246825 1556.28 735 708 158.1
B 4 170 185346 1167.53 735 708 158.1
C 15 174 2781707 16659.26 600 595 166.9
C 15 147 1467336 8785.99 600 595 166.9
C 1 44 832106 4980.87 600 595 166.9
D 15 184 4790457 36118.65 468 451 132.6
D 7 61 4079171 30755.25 468 451 132.6
D 7 60 574520 4328.72 468 451 132.6

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