ASTROSAT CZTI

Data Quality Report

Orbit 33479

Creation date: 2024-06-27T20:49:16.387750
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_060T01_9000004804_33479cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33479cztM0_level2_quad_clean.evt
Size (bytes)471,337,92063,604,800
Size449.5 MB 60.7 MB
Events in quadrant A2,395,174404,911
Events in quadrant B3,874,527401,603
Events in quadrant C2,879,364395,806
Events in quadrant D4,780,951367,373

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102562
B0148851
C0113901
D0175201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A508330.059020%
B50832955.803659%
C5083480.944324%
D508369113.594334%

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 6995 5084 0 0 0.00% 0.00%
B 6995 5084 240 240 3.43% 4.72%
C 6995 5084 43 43 0.61% 0.85%
D 6994 5083 668 668 9.55% 13.14%

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 13 254 9162 69.15 617 607 123.7
A 3 137 5971 43.36 617 607 123.7
A 10 83 5283 37.8 617 607 123.7
B 5 172 799586 6870.75 609 593 116.3
B 0 213 489581 4204.94 609 593 116.3
B 5 255 113740 972.98 609 593 116.3
C 15 214 220479 1564.89 607 613 140.5
C 0 10 162536 1152.48 607 613 140.5
C 14 254 46327 325.37 607 613 140.5
D 2 250 1328306 9661.08 567 553 137.4
D 8 195 604922 4397.55 567 553 137.4
D 12 6 373400 2712.93 567 553 137.4

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