ASTROSAT CZTI

Data Quality Report

Orbit 42070

Creation date: 2024-06-27T22:36:29.220940
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_037T03_9000005738_42070cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42070cztM0_level2_quad_clean.evt
Size (bytes)327,741,12088,021,440
Size312.6 MB 83.9 MB
Events in quadrant A3,877,974592,944
Events in quadrant B2,381,124619,131
Events in quadrant C2,455,695576,563
Events in quadrant D3,019,854519,518

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151741
B0104251
C0102661
D0125151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5098591.157317%
B5098130.255002%
C509930.058835%
D50991603.137870%

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 7222 5099 27 27 0.37% 0.53%
B 7222 5099 6 6 0.08% 0.12%
C 7223 5100 1 1 0.01% 0.02%
D 7223 5100 136 136 1.88% 2.67%

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 15 222 818407 6731.92 587 575 121.5
A 10 83 497745 4092.42 587 575 121.5
A 15 223 276393 2270.38 587 575 121.5
B 5 255 40174 350.45 586 571 113.0
B 3 112 39426 343.83 586 571 113.0
B 12 111 14230 120.87 586 571 113.0
C 15 214 213449 1598.47 570 575 133.2
C 7 220 8990 63.19 570 575 133.2
C 12 249 6346 43.33 570 575 133.2
D 12 6 316863 2305.88 561 545 137.2
D 13 249 266998 1942.37 561 545 137.2
D 1 52 86547 626.93 561 545 137.2

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