ASTROSAT CZTI

Data Quality Report

Orbit 16587

Creation date: 2024-06-27T17:24:44.719196
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/AS1C04_001T01_9000002446_16587cztM0_level2.evt modeM0/AS1C04_001T01_9000002446_16587cztM0_level2_quad_clean.evt
Size (bytes)475,384,320128,376,000
Size453.4 MB 122.4 MB
Events in quadrant A3,076,449875,718
Events in quadrant B3,635,049886,531
Events in quadrant C3,496,056866,612
Events in quadrant D3,778,374836,296

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130992
B0147401
C0146501
D0152801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6058560.924397%
B60581141.881809%
C60581041.716738%
D60581873.086827%

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 7379 6060 20 20 0.27% 0.33%
B 7379 6060 36 36 0.49% 0.59%
C 7379 6060 1 1 0.01% 0.02%
D 7379 6060 152 152 2.06% 2.51%

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 15 174 122698 801.21 760 744 152.2
A 15 223 17359 109.16 760 744 152.2
A 9 143 7391 43.67 760 744 152.2
B 15 35 290849 2084.2 765 747 139.2
B 0 229 61207 434.37 765 747 139.2
B 10 16 59178 419.79 765 747 139.2
C 3 233 433626 2506.46 750 755 172.7
C 14 238 118584 682.27 750 755 172.7
C 7 247 14077 77.14 750 755 172.7
D 1 52 599829 3320.34 749 730 180.4
D 5 222 249647 1379.55 749 730 180.4
D 10 70 45886 250.26 749 730 180.4

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