ASTROSAT CZTI

Data Quality Report

Orbit 34496

Creation date: 2022-02-13T22:24:38.571125
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/AS1A05_156T01_9000004928_34496cztM0_level2.evt modeM0/AS1A05_156T01_9000004928_34496cztM0_level2_quad_clean.evt
Size (bytes)452,318,40064,497,600
Size431.4 MB 61.5 MB
Events in quadrant A2,489,650407,737
Events in quadrant B3,695,577406,576
Events in quadrant C2,786,067408,130
Events in quadrant D4,392,506384,332

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104093
B0141962
C0111522
D0166312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A493060.121704%
B49303907.910751%
C4930390.791075%
D4930891.805274%

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 7053 4931 1 1 0.01% 0.02%
B 7053 4931 259 259 3.67% 5.25%
C 7053 4931 18 18 0.26% 0.37%
D 7053 4931 120 120 1.70% 2.43%

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 39578 313.24 625 614 124.4
A 9 143 16880 130.77 625 614 124.4
A 13 6 11514 87.63 625 614 124.4
B 5 172 1019704 9086.92 603 589 112.2
B 0 229 155224 1378.8 603 589 112.2
B 0 189 62566 552.62 603 589 112.2
C 15 214 210267 1488.0 611 618 140.9
C 0 10 101534 716.26 611 618 140.9
C 14 67 48456 339.53 611 618 140.9
D 8 195 1070249 6490.08 603 592 164.8
D 10 204 558793 3386.85 603 592 164.8
D 7 223 101855 614.4 603 592 164.8

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