ASTROSAT CZTI

Data Quality Report

Orbit 14994

Creation date: 2024-06-27T17:02:16.359837
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/AS1T02_056T01_9000002210_14994cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14994cztM0_level2_quad_clean.evt
Size (bytes)465,065,28061,937,280
Size443.5 MB 59.1 MB
Events in quadrant A3,304,617368,102
Events in quadrant B3,450,509368,536
Events in quadrant C3,238,332359,570
Events in quadrant D3,670,399346,482

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134792
B0139881
C0131551
D0147561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6195520.839387%
B61951151.856336%
C6195310.500404%
D61952734.406780%

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 7476 6197 2 2 0.03% 0.03%
B 7476 6196 42 42 0.56% 0.68%
C 7476 6197 0 0 0.00% 0.00%
D 7476 6197 232 232 3.10% 3.74%

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 53422 322.26 815 803 163.3
A 12 189 52205 314.81 815 803 163.3
A 1 178 21629 127.55 815 803 163.3
B 10 16 209025 1365.82 813 795 152.5
B 0 229 36899 236.81 813 795 152.5
B 4 80 17702 110.9 813 795 152.5
C 3 233 201619 1127.85 778 784 178.1
C 13 61 5683 27.51 778 784 178.1
C 3 234 2330 8.68 778 784 178.1
D 15 0 651938 3573.94 763 744 182.2
D 10 70 30923 165.63 763 744 182.2
D 13 104 25504 135.89 763 744 182.2

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