ASTROSAT CZTI

Data Quality Report

Orbit 43468

Creation date: 2024-06-27T22:52:18.565304
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_018T01_9000005874_43468cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43468cztM0_level2_quad_clean.evt
Size (bytes)1,172,304,000179,222,400
Size1.1 GB 170.9 MB
Events in quadrant A9,714,1911,276,463
Events in quadrant B6,665,0811,361,247
Events in quadrant C5,838,6191,276,146
Events in quadrant D20,210,890648,528

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366913
B0280293
C0254073
D0686428

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124788246.603622%
B12478630.504889%
C1247880.064113%
D12477599348.032380%

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 15163 12480 746 746 4.92% 5.98%
B 15163 12480 43 43 0.28% 0.34%
C 15163 12480 1 1 0.01% 0.01%
D 15161 12478 5889 5889 38.84% 47.20%

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 15 237 1708575 6464.09 1291 1264 264.1
A 15 222 1562702 5911.79 1291 1264 264.1
A 10 83 1282270 4850.04 1291 1264 264.1
B 0 199 426744 1688.76 1324 1287 251.9
B 0 245 419300 1659.21 1324 1287 251.9
B 0 189 249856 986.64 1324 1287 251.9
C 15 214 549987 1831.1 1291 1298 299.6
C 3 233 174764 578.9 1291 1298 299.6
C 14 254 37706 121.5 1291 1298 299.6
D 1 52 15776972 69153.62 930 901 228.1
D 13 249 231177 1009.4 930 901 228.1
D 12 233 139499 607.54 930 901 228.1

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