ASTROSAT CZTI

Data Quality Report

Orbit 36785

Creation date: 2024-06-27T21:31:38.190844
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_083T01_9000005242_36785cztM0_level2.evt modeM0/AS1A11_083T01_9000005242_36785cztM0_level2_quad_clean.evt
Size (bytes)611,320,32064,595,520
Size583.0 MB 61.6 MB
Events in quadrant A2,599,152485,420
Events in quadrant B9,708,407175,993
Events in quadrant C2,858,822475,846
Events in quadrant D2,995,832453,911

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107953
B0322552
C0114932
D0121952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518490.173611%
B5184327463.155864%
C5184510.983796%
D5184510.983796%

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 7067 5185 0 0 0.00% 0.00%
B 7067 5185 3092 3092 43.75% 59.63%
C 7067 5185 42 42 0.59% 0.81%
D 7067 5185 53 53 0.75% 1.02%

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 220638 1768.12 611 600 124.4
A 13 6 12226 93.42 611 600 124.4
A 13 254 8382 62.53 611 600 124.4
B 12 1 8194959 123731.1 339 331 66.2
B 4 171 67657 1016.56 339 331 66.2
B 0 190 33372 498.89 339 331 66.2
C 0 207 244201 1789.94 586 591 136.1
C 15 214 243257 1783.0 586 591 136.1
C 0 10 46732 339.02 586 591 136.1
D 13 249 191715 1321.64 589 572 144.6
D 12 227 171693 1183.2 589 572 144.6
D 12 6 130357 897.38 589 572 144.6

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