ASTROSAT CZTI

Data Quality Report

Orbit 35392

Creation date: 2022-04-16T12:11:54.033257
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/AS1A11_099T01_9000005068_35392cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35392cztM0_level2_quad_clean.evt
Size (bytes)750,902,40042,816,960
Size716.1 MB 40.8 MB
Events in quadrant A2,816,171307,142
Events in quadrant B9,241,409171,129
Events in quadrant C5,974,829190,536
Events in quadrant D4,354,868258,276

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112043
B0310592
C0208402
D0164382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A524260.114460%
B5242284754.311332%
C5242138326.383060%
D52434488.544726%

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 7335 5243 1 1 0.01% 0.02%
B 7335 5242 2428 2428 33.10% 46.32%
C 7335 5243 1311 1311 17.87% 25.00%
D 7336 5244 373 373 5.08% 7.11%

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 124246 907.77 688 678 136.1
A 13 6 20078 142.52 688 678 136.1
A 13 254 9660 65.98 688 678 136.1
B 4 251 4717406 51016.15 493 482 92.5
B 5 236 1089783 11781.39 493 482 92.5
B 5 14 405212 4377.38 493 482 92.5
C 4 254 3066358 23383.16 567 573 131.1
C 0 10 367882 2801.52 567 573 131.1
C 15 214 193582 1472.11 567 573 131.1
D 7 80 1333474 8717.39 627 610 152.9
D 8 195 297734 1943.29 627 610 152.9
D 2 152 71169 461.48 627 610 152.9

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