ASTROSAT CZTI

Data Quality Report

Orbit 34970

Creation date: 2022-07-18T20:06:05.533448
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_34970cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34970cztM0_level2_quad_clean.evt
Size (bytes)466,015,68088,614,720
Size444.4 MB 84.5 MB
Events in quadrant A2,643,754599,521
Events in quadrant B3,539,263580,515
Events in quadrant C2,923,496581,133
Events in quadrant D4,642,895546,854

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113083
B0138402
C0118512
D0174872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A535990.167942%
B53593326.195186%
C5359661.231573%
D53592254.198545%

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 7242 5360 0 0 0.00% 0.00%
B 7242 5360 258 258 3.56% 4.81%
C 7242 5360 51 51 0.70% 0.95%
D 7242 5360 191 191 2.64% 3.56%

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 72860 549.88 657 645 131.3
A 15 223 12928 93.53 657 645 131.3
A 13 6 12708 91.85 657 645 131.3
B 5 172 932743 7683.82 630 614 121.3
B 0 155 83791 685.65 630 614 121.3
B 0 190 20757 166.04 630 614 121.3
C 15 214 224457 1532.31 632 637 146.1
C 0 10 182440 1244.65 632 637 146.1
C 0 207 18142 119.84 632 637 146.1
D 8 195 1199049 7845.06 632 616 152.8
D 13 249 350158 2288.14 632 616 152.8
D 1 47 160713 1048.01 632 616 152.8

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