ASTROSAT CZTI

Data Quality Report

Orbit 42000

Creation date: 2024-06-27T22:35:34.286435
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/AS1T05_132T01_9000005730_42000cztM0_level2.fits modeM0/AS1T05_132T01_9000005730_42000cztM0_level2_quad_clean.evt
Size (bytes)448,378,56089,631,360
Size427.6 MB 85.5 MB
Events in quadrant A2,994,375610,192
Events in quadrant B2,556,332627,568
Events in quadrant C2,554,189597,900
Events in quadrant D8,055,571484,796

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122402
B0115732
C0112792
D0278559

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5629120.213182%
B562990.159886%
C562930.053295%
D562886515.369581%

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 7151 5630 5 5 0.07% 0.09%
B 7151 5630 5 5 0.07% 0.09%
C 7151 5630 0 0 0.00% 0.00%
D 7150 5629 1006 1006 14.07% 17.87%

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 591378 4788.91 604 592 123.4
A 15 222 28265 224.32 604 592 123.4
A 2 79 15166 118.14 604 592 123.4
B 0 190 93980 803.06 601 585 116.3
B 5 255 28905 243.51 601 585 116.3
B 15 85 18490 153.96 601 585 116.3
C 15 214 235561 1703.26 591 597 137.9
C 3 233 4969 31.69 591 597 137.9
C 13 61 3973 24.47 591 597 137.9
D 1 52 4272821 31404.78 552 536 136.0
D 12 233 716124 5260.16 552 536 136.0
D 13 249 647537 4755.99 552 536 136.0

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