ASTROSAT CZTI

Data Quality Report

Orbit 05508

Creation date: 2024-06-27T14:56:03.804568
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/AS1A02_162T01_9000000704_05508cztM0_level2.evt modeM0/AS1A02_162T01_9000000704_05508cztM0_level2_quad_clean.evt
Size (bytes)1,066,553,280147,006,720
Size1017.1 MB 140.2 MB
Events in quadrant A6,335,324931,315
Events in quadrant B11,270,505751,861
Events in quadrant C6,964,323936,443
Events in quadrant D6,809,279892,806

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0369328061
B06593524033
C0389178652
D0391698933

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036271
B036351
C036490
D036367

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0161
C0161
D0162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A139383662.625915%
B12300143111.634146%
C138944173.001296%
D138683692.660802%

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 19434 16031 6 6 0.03% 0.04%
B 19435 14683 440 440 2.26% 3.00%
C 19435 16036 45 45 0.23% 0.28%
D 19435 16002 33 33 0.17% 0.21%

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 0 50 49082 142.17 1626 1588 334.1
A 12 194 16289 44.01 1626 1588 334.1
A 0 226 15906 42.86 1626 1588 334.1
B 15 255 5089579 18432.95 1417 1381 276.0
B 15 204 518496 1873.35 1417 1381 276.0
B 11 51 60750 215.08 1417 1381 276.0
C 9 247 558550 1512.48 1580 1584 368.2
C 1 16 192386 518.14 1580 1584 368.2
C 8 128 21375 53.74 1580 1584 368.2
D 2 152 233858 596.54 1584 1535 389.4
D 2 136 159143 404.7 1584 1535 389.4
D 12 233 128847 326.9 1584 1535 389.4

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