ASTROSAT CZTI

Data Quality Report

Orbit 17480

Creation date: 2024-06-27T17:37:14.235274
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/AS1T03_051T01_9000002588_17480cztM0_level2.evt modeM0/AS1T03_051T01_9000002588_17480cztM0_level2_quad_clean.evt
Size (bytes)426,242,88087,598,080
Size406.5 MB 83.5 MB
Events in quadrant A3,057,454553,200
Events in quadrant B3,084,270567,007
Events in quadrant C3,112,203544,172
Events in quadrant D3,211,796533,939

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133011
B0133091
C0132711
D0137751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6509240.368720%
B6509260.399447%
C6509620.952527%
D6509290.445537%

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 7509 6510 1 1 0.01% 0.02%
B 7509 6510 0 0 0.00% 0.00%
C 7509 6510 0 0 0.00% 0.00%
D 7509 6510 8 8 0.11% 0.12%

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 15 174 36611 224.58 783 764 159.6
A 14 237 7024 39.22 783 764 159.6
A 0 226 6797 37.8 783 764 159.6
B 12 111 17866 113.58 784 764 150.6
B 11 111 15133 95.43 784 764 150.6
B 14 111 12736 79.51 784 764 150.6
C 14 238 117200 649.14 761 767 179.4
C 5 218 14305 75.48 761 767 179.4
C 3 233 13259 69.65 761 767 179.4
D 11 176 108631 578.25 767 747 186.6
D 5 222 97908 520.77 767 747 186.6
D 13 189 33657 176.39 767 747 186.6

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