ASTROSAT CZTI

Data Quality Report

Orbit 01493

Creation date: 2024-06-27T14:12:20.786020
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/AS1T01_023T01_9000000250_01493cztM0_level2.evt modeM0/AS1T01_023T01_9000000250_01493cztM0_level2_quad_clean.evt
Size (bytes)1,128,231,36063,982,080
Size1.1 GB 61.0 MB
Events in quadrant A8,676,216363,485
Events in quadrant B8,664,728370,814
Events in quadrant C8,061,682368,703
Events in quadrant D8,317,057361,445

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305972
B0305511
C0287721
D0295291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6782390.575052%
B6782350.516072%
C6782170.250664%
D67821081.592451%

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 7592 6783 319 319 4.20% 4.70%
B 7592 6783 341 341 4.49% 5.03%
C 7592 6782 217 217 2.86% 3.20%
D 7592 6783 393 393 5.18% 5.79%

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 15 127 734874 1466.54 2064 2081 499.7
A 4 32 14443 24.74 2064 2081 499.7
A 13 235 12435 20.72 2064 2081 499.7
B 8 4 284675 548.02 2176 2190 515.5
B 12 52 31143 56.17 2176 2190 515.5
B 15 22 30759 55.42 2176 2190 515.5
C 15 241 255937 458.03 1982 2052 554.3
C 3 111 19933 32.26 1982 2052 554.3
C 7 239 13841 21.27 1982 2052 554.3
D 9 66 890646 1512.41 1905 1981 587.6
D 10 125 107647 179.83 1905 1981 587.6
D 9 53 78386 130.03 1905 1981 587.6

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