ASTROSAT CZTI

Data Quality Report

Orbit 48387

Creation date: 2024-09-08T18:36:23.547508
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_029T01_9000006426_48387cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48387cztM0_level2_quad_clean.evt
Size (bytes)2,038,798,080298,632,960
Size1.9 GB 284.8 MB
Events in quadrant A22,361,7512,134,554
Events in quadrant B25,156,8751,515,910
Events in quadrant C9,042,4892,215,553
Events in quadrant D17,283,4641,725,124

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0806864
B0891204
C0429534
D0662474

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04300
B04300
C04300
D04300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2105611475.447378%
B21057674932.051099%
C210571170.555635%
D21057274313.026547%

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 24761 21060 511 511 2.06% 2.43%
B 24762 21061 5485 5485 22.15% 26.04%
C 24762 21061 8 8 0.03% 0.04%
D 24762 21061 2572 2572 10.39% 12.21%

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 12182522 25795.16 2274 2225 472.2
A 13 248 1375462 2908.21 2274 2225 472.2
A 13 254 43179 86.73 2274 2225 472.2
B 12 16 10285261 28350.01 1859 1801 362.7
B 5 255 6854159 18890.96 1859 1801 362.7
B 4 21 514764 1414.16 1859 1801 362.7
C 12 2 79592 143.77 2286 2299 537.6
C 15 208 28475 48.69 2286 2299 537.6
C 13 61 14872 23.39 2286 2299 537.6
D 2 165 8672535 16244.81 2142 2078 533.7
D 2 249 247601 460.01 2142 2078 533.7
D 2 234 88133 161.23 2142 2078 533.7

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