ASTROSAT CZTI

Data Quality Report

Orbit 40547

Creation date: 2024-06-27T22:17:24.521163
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_011T26_9000005548_40547cztM0_level2.fits modeM0/AS1A12_011T26_9000005548_40547cztM0_level2_quad_clean.evt
Size (bytes)378,993,60084,965,760
Size361.4 MB 81.0 MB
Events in quadrant A2,797,250613,939
Events in quadrant B2,369,300632,972
Events in quadrant C2,545,927589,423
Events in quadrant D5,927,043386,480

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111293
B0100632
C0104712
D0211762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499280.160256%
B499270.140224%
C4992130.260417%
D4992172934.635417%

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 7055 4993 2 2 0.03% 0.04%
B 7055 4993 0 0 0.00% 0.00%
C 7055 4993 8 8 0.11% 0.16%
D 7055 4993 490 490 6.95% 9.81%

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 460312 3860.88 588 578 119.1
A 12 189 52184 433.39 588 578 119.1
A 6 10 9283 73.11 588 578 119.1
B 3 112 45604 402.33 583 569 111.9
B 0 230 30817 270.23 583 569 111.9
B 12 111 13726 117.54 583 569 111.9
C 15 214 222524 1689.4 562 565 131.4
C 14 254 68787 519.26 562 565 131.4
C 0 10 45146 339.32 562 565 131.4
D 12 227 2229616 18279.24 492 479 121.9
D 5 32 1218917 9991.36 492 479 121.9
D 2 250 193740 1584.77 492 479 121.9

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