ASTROSAT CZTI

Data Quality Report

Orbit 39148

Creation date: 2024-06-27T22:01:08.691218
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_054T02_9000005444_39148cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39148cztM0_level2_quad_clean.evt
Size (bytes)417,072,960112,515,840
Size397.8 MB 107.3 MB
Events in quadrant A3,526,868762,293
Events in quadrant B3,093,916767,994
Events in quadrant C3,335,182736,214
Events in quadrant D4,963,354674,647

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147523
B0139002
C0141442
D0194912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6680270.404192%
B6680300.449102%
C6680210.314371%
D66802403.592814%

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 9333 6682 17 17 0.18% 0.25%
B 9333 6682 10 10 0.11% 0.15%
C 9333 6682 13 13 0.14% 0.19%
D 9333 6682 171 171 1.83% 2.56%

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 486465 3198.42 748 734 151.9
A 13 248 79758 520.35 748 734 151.9
A 9 143 32356 208.22 748 734 151.9
B 5 172 122449 853.84 741 722 142.6
B 12 111 18354 123.67 741 722 142.6
B 0 190 17249 115.92 741 722 142.6
C 15 214 274218 1626.35 723 726 168.2
C 9 187 115962 685.26 723 726 168.2
C 14 254 63113 370.99 723 726 168.2
D 12 235 1161205 6537.81 720 699 177.5
D 5 222 356699 2005.56 720 699 177.5
D 13 171 296351 1665.58 720 699 177.5

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