ASTROSAT CZTI

Data Quality Report

Orbit 46662

Creation date: 2024-06-27T23:26:04.754367
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/AS1A13_039T01_9000006246_46662cztM0_level2.fits modeM0/AS1A13_039T01_9000006246_46662cztM0_level2_quad_clean.evt
Size (bytes)464,676,480105,672,960
Size443.2 MB 100.8 MB
Events in quadrant A6,357,776683,321
Events in quadrant B3,376,313730,788
Events in quadrant C2,886,705711,342
Events in quadrant D4,088,846632,526

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230642
B0144734
C0132002
D0169112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63332634.152850%
B63321041.642451%
C6332290.457991%
D63321672.637397%

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 7548 6334 151 151 2.00% 2.38%
B 7547 6333 45 45 0.60% 0.71%
C 7547 6333 11 11 0.15% 0.17%
D 7547 6333 130 130 1.72% 2.05%

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 3557912 25603.28 674 662 138.9
A 15 235 71910 512.81 674 662 138.9
A 0 247 26478 185.81 674 662 138.9
B 0 189 200560 1492.93 690 669 133.9
B 4 171 120171 892.53 690 669 133.9
B 15 201 65001 480.48 690 669 133.9
C 14 254 63378 391.04 685 690 160.3
C 12 250 35511 217.21 685 690 160.3
C 1 241 35267 215.69 685 690 160.3
D 13 249 362932 2125.8 669 647 170.4
D 1 52 252210 1476.11 669 647 170.4
D 12 128 193899 1133.95 669 647 170.4

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