ASTROSAT CZTI

Data Quality Report

Orbit 39268

Creation date: 2024-06-27T22:02:30.565345
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_037T01_9000005456_39268cztM0_level2.fits modeM0/AS1A12_037T01_9000005456_39268cztM0_level2_quad_clean.evt
Size (bytes)698,207,040131,025,600
Size665.9 MB 125.0 MB
Events in quadrant A4,073,696913,779
Events in quadrant B4,207,149929,702
Events in quadrant C3,877,040897,193
Events in quadrant D13,047,558652,166

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174702
B0180881
C0168461
D0445501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8259180.217944%
B8259670.811236%
C825930.036324%
D8259235328.490132%

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 9691 8260 6 6 0.06% 0.07%
B 9691 8260 45 45 0.46% 0.54%
C 9691 8260 0 0 0.00% 0.00%
D 9691 8260 2167 2167 22.36% 26.23%

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 466518 2515.34 916 898 185.1
A 15 222 60096 319.79 916 898 185.1
A 3 137 10198 50.24 916 898 185.1
B 5 172 202293 1139.98 904 878 176.7
B 0 190 152144 856.14 904 878 176.7
B 5 255 126341 710.1 904 878 176.7
C 15 214 361684 1712.36 893 898 210.7
C 3 233 16136 72.32 893 898 210.7
C 9 187 10246 44.37 893 898 210.7
D 12 235 9475286 47559.06 817 794 199.2
D 12 227 257544 1288.8 817 794 199.2
D 2 249 79813 396.65 817 794 199.2

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