ASTROSAT CZTI

Data Quality Report

Orbit 25812

Creation date: 2024-06-27T19:21:43.119230
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_068T01_9000003756_25812cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25812cztM0_level2_quad_clean.evt
Size (bytes)1,997,527,680349,744,320
Size1.9 GB 333.5 MB
Events in quadrant A14,815,8832,211,966
Events in quadrant B13,591,9092,290,335
Events in quadrant C13,273,9862,143,006
Events in quadrant D17,003,2822,102,250

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610110
B0568790
C0562090
D0680610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A268435832.171888%
B268432370.882912%
C268433301.229371%
D268444461.661451%

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 32388 26845 411 411 1.27% 1.53%
B 32388 26843 2 2 0.01% 0.01%
C 32388 26844 0 0 0.00% 0.00%
D 32389 26846 333 333 1.03% 1.24%

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 0 13 1737627 2573.08 3392 3332 674.0
A 13 254 35475 47.69 3392 3332 674.0
A 3 137 30683 40.58 3392 3332 674.0
B 12 111 78154 117.03 3408 3334 639.3
B 11 111 69733 103.86 3408 3334 639.3
B 0 219 64929 96.35 3408 3334 639.3
C 14 238 524872 699.13 3239 3265 746.1
C 3 233 92569 119.7 3239 3265 746.1
C 13 61 22292 25.5 3239 3265 746.1
D 1 52 2162828 2799.47 3254 3178 771.5
D 7 223 1323523 1711.51 3254 3178 771.5
D 8 195 714058 921.48 3254 3178 771.5

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