ASTROSAT CZTI

Data Quality Report

Orbit 35944

Creation date: 2022-06-09T04:05:22.577144
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_080T01_9000005146_35944cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35944cztM0_level2_quad_clean.evt
Size (bytes)468,020,16054,190,080
Size446.3 MB 51.7 MB
Events in quadrant A2,782,533339,196
Events in quadrant B4,672,638298,188
Events in quadrant C2,983,810324,006
Events in quadrant D3,383,705316,226

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111143
B0171532
C0116762
D0132412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5176150.289799%
B517678515.166151%
C5176851.642195%
D5176831.603555%

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 7298 5177 8 8 0.11% 0.15%
B 7298 5177 543 543 7.44% 10.49%
C 7298 5177 75 75 1.03% 1.45%
D 7298 5177 70 70 0.96% 1.35%

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 164885 1247.71 655 646 131.6
A 9 143 49457 370.81 655 646 131.6
A 15 169 28067 208.31 655 646 131.6
B 5 172 2130851 18715.24 596 583 113.8
B 4 171 75437 657.62 596 583 113.8
B 0 213 57021 495.83 596 583 113.8
C 0 10 281312 1979.29 617 622 141.8
C 15 214 218277 1534.8 617 622 141.8
C 0 207 57271 399.46 617 622 141.8
D 8 195 286800 1901.1 623 609 150.5
D 2 250 158457 1048.55 623 609 150.5
D 12 227 153084 1012.86 623 609 150.5

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