ASTROSAT CZTI

Data Quality Report

Orbit 36792

Creation date: 2024-06-27T21:31:44.799931
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/AS1A11_075T01_9000005244_36792cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36792cztM0_level2_quad_clean.evt
Size (bytes)734,221,44064,667,520
Size700.2 MB 61.7 MB
Events in quadrant A3,286,629451,727
Events in quadrant B11,941,986237,716
Events in quadrant C3,251,836454,117
Events in quadrant D3,387,826432,550

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133923
B0392292
C0130072
D0138132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54291973.628661%
B5429430079.204273%
C54291633.002395%
D54301262.320442%

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 7132 5430 136 136 1.91% 2.50%
B 7132 5429 4004 4004 56.14% 73.75%
C 7132 5430 138 138 1.93% 2.54%
D 7133 5431 113 113 1.58% 2.08%

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 7 16 458971 3626.57 619 608 126.4
A 10 83 238253 1880.25 619 608 126.4
A 9 143 123405 971.57 619 608 126.4
B 12 1 9668446 128368.36 397 387 75.3
B 4 232 190198 2520.23 397 387 75.3
B 5 172 136725 1810.24 397 387 75.3
C 1 23 336377 2358.17 607 610 142.4
C 15 214 244098 1710.07 607 610 142.4
C 0 207 123493 863.04 607 610 142.4
D 13 249 288592 1936.14 608 590 148.8
D 5 222 270521 1814.66 608 590 148.8
D 12 227 133228 891.68 608 590 148.8

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