ASTROSAT CZTI

Data Quality Report

Orbit 41605

Creation date: 2024-06-27T22:30:37.825861
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_035T02_9000005680_41605cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41605cztM0_level2_quad_clean.evt
Size (bytes)418,227,84088,637,760
Size398.9 MB 84.5 MB
Events in quadrant A2,927,202649,672
Events in quadrant B2,568,908663,266
Events in quadrant C4,834,026504,668
Events in quadrant D4,761,809515,650

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116632
B0108432
C0175442
D0176452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5006300.599281%
B5006380.759089%
C500692418.457851%
D500662312.445066%

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 7098 5007 15 15 0.21% 0.30%
B 7098 5007 26 26 0.37% 0.52%
C 7097 5006 817 817 11.51% 16.32%
D 7098 5007 539 539 7.59% 10.76%

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 528398 4316.48 602 591 122.3
A 15 223 48776 394.06 602 591 122.3
A 13 254 9491 72.79 602 591 122.3
B 0 186 91381 799.02 600 586 113.6
B 7 202 59202 515.84 600 586 113.6
B 0 245 42951 372.82 600 586 113.6
C 0 15 2309696 19967.65 503 506 115.6
C 0 10 366838 3167.69 503 506 115.6
C 15 214 191262 1649.47 503 506 115.6
D 13 249 921574 7005.02 544 530 131.5
D 12 79 920189 6994.49 544 530 131.5
D 1 47 678680 5157.68 544 530 131.5

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