ASTROSAT CZTI

Data Quality Report

Orbit 30959

Creation date: 2024-06-27T20:21:38.478535
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/AS1A10_058T11_9000004474_30959cztM0_level2.evt modeM0/AS1A10_058T11_9000004474_30959cztM0_level2_quad_clean.evt
Size (bytes)691,796,16081,201,600
Size659.7 MB 77.4 MB
Events in quadrant A3,322,117520,528
Events in quadrant B5,609,180515,445
Events in quadrant C4,368,381494,667
Events in quadrant D7,216,452477,814

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140292
B0209703
C0175342
D0260392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6461440.681009%
B64602914.504644%
C64602563.962848%
D64603595.557276%

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 7606 6461 0 0 0.00% 0.00%
B 7605 6460 93 93 1.22% 1.44%
C 7605 6460 72 72 0.95% 1.11%
D 7605 6460 158 158 2.08% 2.45%

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 13 254 11289 60.73 859 843 172.0
A 3 137 8338 43.58 859 843 172.0
A 11 47 7699 39.86 859 843 172.0
B 6 159 1856019 11713.6 837 816 158.4
B 4 80 312087 1965.34 837 816 158.4
B 0 183 48890 303.54 837 816 158.4
C 3 233 680695 3594.2 815 823 189.2
C 0 10 350479 1848.48 815 823 189.2
C 14 238 132804 697.73 815 823 189.2
D 13 174 3755857 19125.22 822 800 196.3
D 8 195 291269 1479.41 822 800 196.3
D 2 250 30942 153.52 822 800 196.3

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