ASTROSAT CZTI

Data Quality Report

Orbit 41578

Creation date: 2024-06-27T22:30:20.027067
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/AS1A12_035T02_9000005676_41578cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41578cztM0_level2_quad_clean.evt
Size (bytes)366,600,96082,451,520
Size349.6 MB 78.6 MB
Events in quadrant A2,817,017580,207
Events in quadrant B2,314,631593,462
Events in quadrant C4,666,771477,691
Events in quadrant D3,389,356500,767

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113142
B0102393
C0170672
D0135882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4913240.488500%
B4912120.244300%
C491282116.714169%
D49122294.662052%

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 6975 4914 6 6 0.09% 0.12%
B 6974 4913 2 2 0.03% 0.04%
C 6974 4913 725 725 10.40% 14.76%
D 6974 4913 190 190 2.72% 3.87%

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 10 83 484276 4299.06 548 537 112.5
A 15 223 118050 1044.35 548 537 112.5
A 2 79 88198 779.06 548 537 112.5
B 0 245 94822 890.67 547 531 105.9
B 15 32 28740 266.46 547 531 105.9
B 5 255 22466 207.19 547 531 105.9
C 14 254 1902677 16402.63 495 499 116.0
C 0 10 626986 5402.25 495 499 116.0
C 15 214 202065 1738.12 495 499 116.0
D 13 249 1136747 8763.31 528 513 129.7
D 12 6 120052 921.96 528 513 129.7
D 10 199 62697 479.6 528 513 129.7

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