ASTROSAT CZTI

Data Quality Report

Orbit 41492

Creation date: 2024-06-27T22:29:45.953090
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_41492cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41492cztM0_level2_quad_clean.evt
Size (bytes)299,016,00085,809,600
Size285.2 MB 81.8 MB
Events in quadrant A2,715,850577,016
Events in quadrant B2,310,687588,549
Events in quadrant C3,050,817545,458
Events in quadrant D2,586,886524,156

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111833
B0105332
C0121942
D0113732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518290.173678%
B518260.115785%
C51822073.994597%
D5182360.694712%

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 7036 5183 2 2 0.03% 0.04%
B 7036 5183 1 1 0.01% 0.02%
C 7036 5183 205 205 2.91% 3.96%
D 7036 5183 30 30 0.43% 0.58%

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 504701 4373.17 565 554 115.3
A 2 79 18627 156.77 565 554 115.3
A 13 254 9926 81.3 565 554 115.3
B 0 190 65656 594.09 563 547 109.6
B 5 255 14519 127.49 563 547 109.6
B 12 111 13899 121.83 563 547 109.6
C 0 10 546300 4318.68 544 545 126.4
C 15 214 214803 1695.47 544 545 126.4
C 14 254 76203 598.7 544 545 126.4
D 12 6 158059 1148.34 558 543 137.2
D 2 249 79588 576.26 558 543 137.2
D 12 128 60550 437.47 558 543 137.2

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