ASTROSAT CZTI

Data Quality Report

Orbit 31767

Creation date: 2024-06-27T20:32:28.182515
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/AS1A10_059T02_9000004636_31767cztM0_level2.evt modeM0/AS1A10_059T02_9000004636_31767cztM0_level2_quad_clean.evt
Size (bytes)341,087,04047,871,360
Size325.3 MB 45.7 MB
Events in quadrant A1,978,028295,833
Events in quadrant B3,106,745295,576
Events in quadrant C2,685,383286,984
Events in quadrant D2,280,947282,228

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C091
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0902
B0904
C0902
D0913

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08734407
B012918657
C011095423
D09588462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4082270.661440%
B4071641.572095%
C40922055.009775%
D4083220.538819%

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 7281 4123 0 0 0.00% 0.00%
B 7281 4104 0 0 0.00% 0.00%
C 7281 4125 55 55 0.76% 1.33%
D 7281 4117 6 6 0.08% 0.15%

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 13 254 7477 68.21 512 501 102.3
A 3 137 5228 46.22 512 501 102.3
A 0 226 4213 36.29 512 501 102.3
B 6 159 1100921 11402.51 502 490 96.5
B 12 111 12043 119.71 502 490 96.5
B 11 111 11167 110.63 502 490 96.5
C 0 10 589093 5058.41 490 492 116.4
C 14 238 78208 667.89 490 492 116.4
C 3 233 77522 661.99 490 492 116.4
D 8 195 312317 2593.28 500 486 120.2
D 12 218 31545 258.3 500 486 120.2
D 2 250 18525 150.02 500 486 120.2

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