ASTROSAT CZTI

Data Quality Report

Orbit 24051

Creation date: 2024-06-27T19:01:33.623942
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/AS1A07_165T01_9000003558_24051cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24051cztM0_level2_quad_clean.evt
Size (bytes)1,268,228,160343,131,840
Size1.2 GB 327.2 MB
Events in quadrant A8,401,7802,314,525
Events in quadrant B9,710,0432,359,548
Events in quadrant C8,928,6992,254,422
Events in quadrant D10,134,3452,208,011

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370324
B0402784
C0372494
D0422384

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18255800.438236%
B182561470.805215%
C182561690.925723%
D182561570.859991%

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 20410 18258 0 0 0.00% 0.00%
B 20411 18259 18 18 0.09% 0.10%
C 20411 18258 0 0 0.00% 0.00%
D 20411 18259 50 50 0.24% 0.27%

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 3 1 44790 98.49 2161 2110 433.4
A 13 254 29201 62.51 2161 2110 433.4
A 6 16 19348 39.78 2161 2110 433.4
B 0 197 749227 1826.98 2162 2106 408.9
B 14 207 164342 396.72 2162 2106 408.9
B 0 189 110189 264.3 2162 2106 408.9
C 7 247 469469 973.52 2081 2096 480.1
C 14 238 331060 685.22 2081 2096 480.1
C 3 233 18848 34.89 2081 2096 480.1
D 8 195 1639848 3225.05 2101 2039 507.8
D 1 52 301680 590.03 2101 2039 507.8
D 12 233 98327 189.6 2101 2039 507.8

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