ASTROSAT CZTI

Data Quality Report

Orbit 13181

Creation date: 2024-06-27T16:37:21.855863
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/AS1T02_012T02_9000001948_13181cztM0_level2.evt modeM0/AS1T02_012T02_9000001948_13181cztM0_level2_quad_clean.evt
Size (bytes)380,574,72055,825,920
Size362.9 MB 53.2 MB
Events in quadrant A2,682,719347,970
Events in quadrant B2,914,926337,020
Events in quadrant C2,135,809345,432
Events in quadrant D3,467,179324,244

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111661
B0117861
C097181
D0135811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4772501.047779%
B47722745.741827%
C4772240.502934%
D47723236.768650%

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 5508 4774 0 0 0.00% 0.00%
B 5508 4774 159 159 2.89% 3.33%
C 5508 4774 1 1 0.02% 0.02%
D 5508 4774 215 215 3.90% 4.50%

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 23 222235 1930.33 556 543 114.8
A 12 189 199222 1729.95 556 543 114.8
A 15 222 33834 289.87 556 543 114.8
B 4 239 677075 6389.85 546 531 105.9
B 3 64 30019 278.51 546 531 105.9
B 0 189 16280 148.75 546 531 105.9
C 15 208 14849 112.2 542 545 127.5
C 14 234 3950 26.71 542 545 127.5
C 13 61 3837 25.82 542 545 127.5
D 1 52 836387 6514.84 527 511 128.3
D 1 7 352907 2746.58 527 511 128.3
D 10 157 140934 1094.46 527 511 128.3

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