ASTROSAT CZTI

Data Quality Report

Orbit 38687

Creation date: 2024-06-27T21:55:06.893792
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/AS1A12_054T01_9000005392_38687cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38687cztM0_level2_quad_clean.evt
Size (bytes)1,142,568,000226,932,480
Size1.1 GB 216.4 MB
Events in quadrant A8,434,7221,553,998
Events in quadrant B13,875,8591,458,756
Events in quadrant C7,386,2861,524,086
Events in quadrant D11,481,3571,336,947

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02940
B02940
C02940
D02940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341174
B0511873
C0309543
D0441853

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144344443.076070%
B14434183412.706111%
C144341851.281696%
D1443410827.496190%

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 17059 14436 361 361 2.12% 2.50%
B 17059 14436 1211 1211 7.10% 8.39%
C 17059 14436 147 147 0.86% 1.02%
D 17059 14436 908 908 5.32% 6.29%

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 13 248 1288516 4030.06 1594 1562 319.3
A 10 83 888186 2776.44 1594 1562 319.3
A 15 174 42213 127.3 1594 1562 319.3
B 4 251 6820259 22932.01 1558 1514 297.3
B 5 184 400586 1342.11 1558 1514 297.3
B 4 170 285911 956.45 1558 1514 297.3
C 14 254 673538 1852.78 1556 1566 362.7
C 15 214 566116 1556.6 1556 1566 362.7
C 0 10 29008 75.66 1556 1566 362.7
D 2 16 2090313 5584.41 1526 1487 374.0
D 12 227 1563500 4175.99 1526 1487 374.0
D 10 118 534828 1425.87 1526 1487 374.0

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