ASTROSAT CZTI

Data Quality Report

Orbit 41288

Creation date: 2024-06-27T22:27:02.921030
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_011T42_9000005640_41288cztM0_level2.fits modeM0/AS1A12_011T42_9000005640_41288cztM0_level2_quad_clean.evt
Size (bytes)384,393,60084,821,760
Size366.6 MB 80.9 MB
Events in quadrant A2,850,547597,529
Events in quadrant B2,383,343621,299
Events in quadrant C2,936,709559,191
Events in quadrant D5,660,464432,487

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112583
B0103292
C0117202
D0202152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5109130.254453%
B510970.137013%
C51091843.601488%
D5109108521.237033%

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 7202 5110 4 4 0.06% 0.08%
B 7202 5110 1 1 0.01% 0.02%
C 7202 5110 181 181 2.51% 3.54%
D 7202 5110 1100 1100 15.27% 21.53%

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 493600 4044.19 594 583 121.9
A 12 189 42845 346.67 594 583 121.9
A 2 79 12763 99.91 594 583 121.9
B 0 229 47792 412.8 589 573 114.4
B 12 111 14454 121.35 589 573 114.4
B 11 111 13446 112.54 589 573 114.4
C 0 10 502987 3835.54 562 566 131.0
C 15 214 218687 1665.16 562 566 131.0
C 12 249 14911 109.51 562 566 131.0
D 1 52 2252289 17745.21 519 503 126.9
D 12 233 672646 5296.82 519 503 126.9
D 5 222 369274 2906.1 519 503 126.9

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