ASTROSAT CZTI

Data Quality Report

Orbit 40643

Creation date: 2024-06-27T22:18:37.208542
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_029T01_9000005556_40643cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40643cztM0_level2_quad_clean.evt
Size (bytes)964,946,880250,853,760
Size920.2 MB 239.2 MB
Events in quadrant A8,009,6111,712,113
Events in quadrant B8,943,2971,745,141
Events in quadrant C7,768,3061,680,497
Events in quadrant D9,752,7341,350,739

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339265
B0375634
C0333854
D0402454

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16042330.205710%
B160423011.876325%
C16042610.380252%
D16042248815.509288%

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 21594 16046 5 5 0.02% 0.03%
B 21594 16046 187 187 0.87% 1.17%
C 21594 16046 43 43 0.20% 0.27%
D 21594 16046 195 195 0.90% 1.22%

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 1213962 3400.49 1744 1707 356.5
A 2 79 58074 158.11 1744 1707 356.5
A 3 137 20280 52.1 1744 1707 356.5
B 0 190 990933 2982.07 1723 1668 331.7
B 0 229 796511 2396.0 1723 1668 331.7
B 5 255 288736 865.35 1723 1668 331.7
C 15 214 690813 1729.22 1706 1714 398.5
C 14 254 318775 795.63 1706 1714 398.5
C 12 249 57258 139.38 1706 1714 398.5
D 12 227 1170091 3065.68 1553 1513 381.2
D 2 120 732029 1916.46 1553 1513 381.2
D 12 191 632664 1655.78 1553 1513 381.2

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