ASTROSAT CZTI

Data Quality Report

Orbit 34957

Creation date: 2022-03-17T02:21:19.306449
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_047T09_9000005010_34957cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34957cztM0_level2_quad_clean.evt
Size (bytes)476,841,60077,031,360
Size454.8 MB 73.5 MB
Events in quadrant A2,579,165515,707
Events in quadrant B3,773,499495,294
Events in quadrant C2,933,337501,624
Events in quadrant D4,805,822458,708

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108322
B0144261
C0116911
D0177311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5155110.213385%
B51554037.817653%
C5155741.435500%
D51553586.944714%

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 7187 5156 5 5 0.07% 0.10%
B 7187 5156 325 325 4.52% 6.30%
C 7187 5156 54 54 0.75% 1.05%
D 7187 5156 339 339 4.72% 6.57%

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 72191 558.78 638 627 128.1
A 7 16 26994 205.88 638 627 128.1
A 13 6 10413 76.41 638 627 128.1
B 5 172 1141236 9803.4 614 598 116.4
B 0 190 156402 1339.08 614 598 116.4
B 15 85 37726 319.1 614 598 116.4
C 0 10 278210 1952.93 620 626 142.1
C 15 214 215986 1515.15 620 626 142.1
C 14 67 8824 57.68 620 626 142.1
D 8 195 916846 6242.09 607 591 146.8
D 1 52 620209 4221.22 607 591 146.8
D 10 118 425464 2894.5 607 591 146.8

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