ASTROSAT CZTI

Data Quality Report

Orbit 11999

Creation date: 2024-06-27T16:21:05.791677
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/AS1G08_024T03_9000001774_11999cztM0_level2.evt modeM0/AS1G08_024T03_9000001774_11999cztM0_level2_quad_clean.evt
Size (bytes)530,297,280106,439,040
Size505.7 MB 101.5 MB
Events in quadrant A3,443,014724,727
Events in quadrant B3,975,381720,072
Events in quadrant C2,993,310724,782
Events in quadrant D5,233,210626,251

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143513
B0160332
C0129892
D0198562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6119771.258376%
B61192944.804707%
C6119310.506619%
D611965710.737049%

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 7470 6121 4 4 0.05% 0.07%
B 7470 6120 160 160 2.14% 2.61%
C 7470 6121 2 2 0.03% 0.03%
D 7470 6121 671 671 8.98% 10.96%

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 184396 1187.06 768 754 154.7
A 1 178 100629 645.59 768 754 154.7
A 1 161 87679 561.88 768 754 154.7
B 4 239 614956 4327.58 764 746 141.9
B 15 204 126645 887.05 764 746 141.9
B 0 231 116795 817.65 764 746 141.9
C 14 234 15579 85.25 761 766 173.8
C 13 61 5706 28.43 761 766 173.8
C 8 128 3742 17.13 761 766 173.8
D 10 199 1242079 7500.1 700 683 165.5
D 1 52 850134 5132.1 700 683 165.5
D 13 104 128688 773.36 700 683 165.5

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