ASTROSAT CZTI

Data Quality Report

Orbit 40729

Creation date: 2024-06-27T22:19:42.232452
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_066T01_9000005562_40729cztM0_level2.fits modeM0/AS1A12_066T01_9000005562_40729cztM0_level2_quad_clean.evt
Size (bytes)799,119,360150,952,320
Size762.1 MB 144.0 MB
Events in quadrant A5,347,2881,092,778
Events in quadrant B6,392,3651,056,279
Events in quadrant C11,504,076899,275
Events in quadrant D5,553,031822,053

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217034
B0258103
C0410033
D0231483

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10098180.178253%
B100985375.317885%
C10098190618.875025%
D10098181117.934244%

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 12845 10100 6 6 0.05% 0.06%
B 12845 10100 455 455 3.54% 4.50%
C 12845 10099 1826 1826 14.22% 18.08%
D 12845 10098 99 99 0.77% 0.98%

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 883664 3828.92 1124 1100 230.5
A 12 189 71714 306.35 1124 1100 230.5
A 10 255 25997 108.01 1124 1100 230.5
B 4 170 1523755 7286.47 1092 1063 209.0
B 0 229 247677 1180.11 1092 1063 209.0
B 0 190 209587 997.84 1092 1063 209.0
C 9 187 6985020 29763.46 1007 1012 234.7
C 15 214 401490 1706.7 1007 1012 234.7
C 14 254 133302 563.77 1007 1012 234.7
D 12 191 443571 1805.99 998 970 245.1
D 2 249 315154 1282.0 998 970 245.1
D 1 47 272537 1108.1 998 970 245.1

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