ASTROSAT CZTI

Data Quality Report

Orbit 40194

Creation date: 2024-06-27T22:13:18.117368
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_032T04_9000005528_40194cztM0_level2.fits modeM0/AS1A12_032T04_9000005528_40194cztM0_level2_quad_clean.evt
Size (bytes)1,299,041,280324,976,320
Size1.2 GB 309.9 MB
Events in quadrant A11,356,2992,157,294
Events in quadrant B9,499,2502,223,583
Events in quadrant C12,582,5842,152,938
Events in quadrant D13,100,8111,927,532

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04100
B04100
C04100
D04100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0456075
B0420325
C0500105
D0531375

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A200053031.514621%
B200051420.709823%
C200052101.049738%
D200056633.314171%

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 26988 20010 200 200 0.74% 1.00%
B 26988 20010 83 83 0.31% 0.41%
C 26988 20010 197 197 0.73% 0.98%
D 26988 20010 597 597 2.21% 2.98%

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 1585160 3571.35 2194 2151 443.3
A 13 248 1048167 2359.86 2194 2151 443.3
A 2 79 194002 432.83 2194 2151 443.3
B 5 255 416387 993.37 2185 2118 417.0
B 0 229 168856 399.82 2185 2118 417.0
B 0 245 102978 241.85 2185 2118 417.0
C 4 254 2671649 5380.52 2146 2163 496.1
C 15 214 827062 1662.64 2146 2163 496.1
C 14 254 349330 699.74 2146 2163 496.1
D 12 227 3093420 5953.91 2129 2075 519.2
D 13 249 634535 1218.11 2129 2075 519.2
D 2 249 575928 1105.24 2129 2075 519.2

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