ASTROSAT CZTI

Data Quality Report

Orbit 24284

Creation date: 2024-06-27T19:04:20.426683
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/AS1A07_047T08_9000003590_24284cztM0_level2.evt modeM0/AS1A07_047T08_9000003590_24284cztM0_level2_quad_clean.evt
Size (bytes)589,040,640120,084,480
Size561.8 MB 114.5 MB
Events in quadrant A2,910,601837,828
Events in quadrant B3,043,471851,047
Events in quadrant C4,383,298784,824
Events in quadrant D7,081,771729,605

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127131
B0130661
C0177571
D0254641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6211280.450813%
B6211380.611818%
C62111001.610047%
D621172711.705039%

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 7291 6211 0 0 0.00% 0.00%
B 7291 6211 2 2 0.03% 0.03%
C 7291 6211 1 1 0.01% 0.02%
D 7290 6210 680 680 9.33% 10.95%

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 13 254 10721 65.8 754 739 151.7
A 3 137 6668 39.08 754 739 151.7
A 0 226 6573 38.46 754 739 151.7
B 15 33 60461 424.72 751 734 140.6
B 0 230 19815 135.68 751 734 140.6
B 12 111 16739 113.81 751 734 140.6
C 7 247 1393338 8490.05 711 714 164.0
C 14 238 115715 701.1 711 714 164.0
C 2 16 85910 519.39 711 714 164.0
D 1 52 1984481 11946.04 692 672 166.1
D 8 195 1816086 10932.0 692 672 166.1
D 12 233 495548 2980.03 692 672 166.1

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