ASTROSAT CZTI

Data Quality Report

Orbit 34209

Creation date: 2022-01-25T13:28:01.304419
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/AS1T04_086T01_9000004884_34209cztM0_level2.evt modeM0/AS1T04_086T01_9000004884_34209cztM0_level2_quad_clean.evt
Size (bytes)743,400,00082,319,040
Size709.0 MB 78.5 MB
Events in quadrant A2,611,060570,317
Events in quadrant B10,270,960415,386
Events in quadrant C3,315,219583,512
Events in quadrant D5,933,572525,504

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114803
B0343212
C0132182
D0215032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5668110.194072%
B5668332958.733239%
C5668811.429076%
D566872012.702893%

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 7160 5669 5 5 0.07% 0.09%
B 7160 5669 2974 2974 41.54% 52.46%
C 7160 5669 62 62 0.87% 1.09%
D 7160 5669 625 625 8.73% 11.02%

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 9 143 27101 200.54 657 643 131.9
A 10 83 23199 170.97 657 643 131.9
A 13 6 14652 106.18 657 643 131.9
B 5 31 4680199 46051.48 523 511 101.6
B 5 15 2462808 24230.76 523 511 101.6
B 5 172 521385 5125.77 523 511 101.6
C 4 254 283478 1933.33 638 644 146.3
C 15 214 265363 1809.51 638 644 146.3
C 0 10 225024 1533.77 638 644 146.3
D 2 250 1498061 10022.27 613 597 149.4
D 8 195 928417 6209.74 613 597 149.4
D 12 217 632205 4227.25 613 597 149.4

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