ASTROSAT CZTI

Data Quality Report

Orbit 11955

Creation date: 2024-06-27T16:20:30.486025
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/AS1A04_124T01_9000001766_11955cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11955cztM0_level2_quad_clean.evt
Size (bytes)519,465,600125,758,080
Size495.4 MB 119.9 MB
Events in quadrant A3,359,785855,692
Events in quadrant B4,087,485863,482
Events in quadrant C2,959,751869,751
Events in quadrant D4,904,200786,749

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141393
B0163272
C0130842
D0188732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62031021.644366%
B62033195.142673%
C6203651.047880%
D620369711.236498%

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 7484 6204 3 3 0.04% 0.05%
B 7484 6204 178 178 2.38% 2.87%
C 7484 6204 0 0 0.00% 0.00%
D 7484 6204 604 604 8.07% 9.74%

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 1 162 118136 770.37 758 742 152.4
A 6 254 95392 621.12 758 742 152.4
A 1 178 61056 395.79 758 742 152.4
B 4 239 520030 3703.89 757 739 140.2
B 15 204 488921 3482.0 757 739 140.2
B 0 218 42785 299.9 757 739 140.2
C 14 234 7143 36.85 756 760 173.2
C 13 61 5678 28.39 756 760 173.2
C 0 207 4853 23.63 756 760 173.2
D 13 122 1522980 8866.89 724 703 171.7
D 1 52 173072 1004.01 724 703 171.7
D 8 195 98412 569.13 724 703 171.7

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