ASTROSAT CZTI

Data Quality Report

Orbit 33913

Creation date: 2024-06-27T20:54:06.476951
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_091T01_9000004842_33913cztM0_level2.evt modeM0/AS1T04_091T01_9000004842_33913cztM0_level2_quad_clean.evt
Size (bytes)653,765,76061,977,600
Size623.5 MB 59.1 MB
Events in quadrant A6,462,741173,046
Events in quadrant B4,014,744450,189
Events in quadrant C3,279,185451,632
Events in quadrant D5,677,637423,334

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225123
B0152922
C0129782
D0205532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5396268349.722016%
B53964969.191994%
C5396961.779096%
D53963937.283173%

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 7249 5395 1056 1056 14.57% 19.57%
B 7249 5396 282 282 3.89% 5.23%
C 7249 5397 75 75 1.03% 1.39%
D 7249 5397 312 312 4.30% 5.78%

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 15 169 4971360 66446.99 368 360 74.8
A 7 16 62761 834.11 368 360 74.8
A 10 83 4899 60.67 368 360 74.8
B 5 172 765092 6474.12 621 604 118.1
B 4 251 633119 5356.49 621 604 118.1
B 0 190 46544 389.05 621 604 118.1
C 0 10 268236 1848.0 631 637 144.8
C 15 214 238314 1641.37 631 637 144.8
C 3 233 121519 834.79 631 637 144.8
D 1 52 1681850 10890.4 626 609 154.4
D 8 195 845393 5472.17 626 609 154.4
D 12 235 274501 1774.16 626 609 154.4

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