ASTROSAT CZTI

Data Quality Report

Orbit 08954

Creation date: 2024-06-27T15:39:22.791012
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/AS1A03_051T01_9000001242_08954cztM0_level2.evt modeM0/AS1A03_051T01_9000001242_08954cztM0_level2_quad_clean.evt
Size (bytes)944,305,920172,883,520
Size900.6 MB 164.9 MB
Events in quadrant A7,006,4661,086,255
Events in quadrant B6,346,7921,100,595
Events in quadrant C6,019,2211,073,452
Events in quadrant D8,302,4701,033,305

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02951019
B02785113
C02753218
D03367021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02822
D02820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136371210.887292%
B13639500.366596%
C13637270.197991%
D136373532.588546%

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 16050 13646 40 40 0.25% 0.29%
B 16050 13647 2 2 0.01% 0.01%
C 16050 13647 0 0 0.00% 0.00%
D 16050 13647 285 285 1.78% 2.09%

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 8 5 646065 1981.48 1597 1566 325.3
A 5 16 179368 546.64 1597 1566 325.3
A 13 164 28233 81.99 1597 1566 325.3
B 0 214 46507 146.63 1605 1566 306.5
B 12 111 33513 104.24 1605 1566 306.5
B 11 111 26629 81.77 1605 1566 306.5
C 13 61 11601 28.17 1542 1547 356.8
C 5 238 4293 7.69 1542 1547 356.8
C 3 202 3948 6.73 1542 1547 356.8
D 13 105 685286 1748.56 1532 1489 391.1
D 1 52 677370 1728.32 1532 1489 391.1
D 8 195 426976 1088.03 1532 1489 391.1

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