ASTROSAT CZTI

Data Quality Report

Orbit 34164

Creation date: 2024-06-27T20:57:18.829090
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/AS1A11_047T03_9000004880_34164cztM0_level2.evt modeM0/AS1A11_047T03_9000004880_34164cztM0_level2_quad_clean.evt
Size (bytes)546,814,08064,607,040
Size521.5 MB 61.6 MB
Events in quadrant A2,426,954410,247
Events in quadrant B6,395,843393,746
Events in quadrant C3,696,791396,625
Events in quadrant D3,684,830387,206

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105823
B0225712
C0143312
D0144252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525190.171396%
B5251126023.995429%
C52511983.770710%
D5251881.675871%

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 7254 5252 0 0 0.00% 0.00%
B 7254 5252 1095 1095 15.10% 20.85%
C 7254 5252 161 161 2.22% 3.07%
D 7254 5252 65 65 0.90% 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 10 83 21285 164.96 620 609 125.3
A 13 254 9913 74.23 620 609 125.3
A 13 6 7613 55.88 620 609 125.3
B 5 31 2457063 21978.77 577 561 111.8
B 5 15 1009156 9024.08 577 561 111.8
B 5 172 455767 4072.81 577 561 111.8
C 0 10 824409 6010.5 592 597 137.1
C 15 214 224359 1632.56 592 597 137.1
C 15 208 186180 1354.01 592 597 137.1
D 8 195 898285 6068.54 599 581 147.9
D 12 218 275416 1857.9 599 581 147.9
D 13 249 61709 413.23 599 581 147.9

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