ASTROSAT CZTI

Data Quality Report

Orbit 34971

Creation date: 2022-03-18T00:25:07.582569
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_34971cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34971cztM0_level2_quad_clean.evt
Size (bytes)422,582,40083,249,280
Size403.0 MB 79.4 MB
Events in quadrant A2,587,406556,539
Events in quadrant B2,767,242559,164
Events in quadrant C2,842,607539,817
Events in quadrant D4,248,997502,440

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109433
B0113172
C0113912
D0161222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A517880.154500%
B5178420.811124%
C5178651.255311%
D51781683.244496%

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 7181 5179 0 0 0.00% 0.00%
B 7181 5179 27 27 0.38% 0.52%
C 7181 5179 49 49 0.68% 0.95%
D 7181 5179 131 131 1.82% 2.53%

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 72531 561.04 644 633 128.2
A 15 223 10042 73.42 644 633 128.2
A 13 254 8849 64.11 644 633 128.2
B 5 172 210976 1757.42 635 620 119.7
B 3 112 46691 384.9 635 620 119.7
B 12 111 14054 112.23 635 620 119.7
C 15 214 216092 1499.84 622 626 143.7
C 0 10 164667 1141.87 622 626 143.7
C 14 67 21924 148.25 622 626 143.7
D 8 195 1198582 7971.33 620 604 150.3
D 1 47 136892 906.86 620 604 150.3
D 13 249 125943 834.0 620 604 150.3

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