ASTROSAT CZTI

Data Quality Report

Orbit 46256

Creation date: 2024-06-27T23:20:53.736916
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_094T02_9000006190_46256cztM0_level2.fits modeM0/AS1A13_094T02_9000006190_46256cztM0_level2_quad_clean.evt
Size (bytes)160,289,28034,810,560
Size152.9 MB 33.2 MB
Events in quadrant A1,937,028237,196
Events in quadrant B1,257,283240,688
Events in quadrant C1,072,658221,994
Events in quadrant D1,500,290201,761

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070610
B050990
C046860
D058770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A210950.237079%
B210960.284495%
C2110251.184834%
D2110874.123223%

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 2109 2109 0 0 0.00% 0.00%
B 2109 2109 3 3 0.14% 0.14%
C 2110 2110 24 24 1.14% 1.14%
D 2110 2110 92 92 4.36% 4.36%

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 1047630 21808.2 226 221 48.0
A 0 247 6682 134.53 226 221 48.0
A 13 254 3793 74.37 226 221 48.0
B 3 112 281705 6212.6 223 216 45.3
B 5 172 33168 727.27 223 216 45.3
B 5 255 25349 554.7 223 216 45.3
C 12 2 94685 1789.19 220 221 52.8
C 1 3 77315 1460.19 220 221 52.8
C 3 233 37190 700.21 220 221 52.8
D 1 52 402047 7168.66 220 212 56.1
D 8 129 179322 3195.29 220 212 56.1
D 1 47 20895 368.98 220 212 56.1

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