ASTROSAT CZTI

Data Quality Report

Orbit 49816

Creation date: 2024-12-14T12:50:33.296997
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/AS1A13_037T01_9000006440_49816cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49816cztM0_level2_quad_clean.evt
Size (bytes)1,402,657,92059,008,320
Size1.3 GB 56.3 MB
Events in quadrant A16,003,704340,216
Events in quadrant B5,462,517708,786
Events in quadrant C12,576,23538,341
Events in quadrant D17,321,922186,877

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0524640
B0211230
C0423990
D0562640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7219543675.301288%
B72205858.102493%
C72207220100.000000%
D7220717699.390582%

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 7218 7218 5290 5290 73.29% 73.29%
B 7220 7220 491 491 6.80% 6.80%
C 7219 7219 2015 2015 27.91% 27.91%
D 7219 7219 6826 6826 94.56% 94.56%

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 98 10828211 97131.7 400 386 111.5
A 15 63 488210 4376.06 400 386 111.5
A 4 204 482038 4320.69 400 386 111.5
B 10 44 1296912 8274.95 740 718 156.6
B 4 171 545425 3477.43 740 718 156.6
B 1 255 148404 942.83 740 718 156.6
C 15 147 6492850 156436.75 61 56 41.5
C 15 197 2284976 55052.64 61 56 41.5
C 15 174 598108 14409.41 61 56 41.5
D 7 61 3227636 35382.01 252 240 91.2
D 7 126 1621080 17769.3 252 240 91.2
D 7 60 1245266 13649.25 252 240 91.2

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