ASTROSAT CZTI

Data Quality Report

Orbit 41874

Creation date: 2024-06-27T22:33:54.491608
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/AS1T05_124T01_9000005712_41874cztM0_level2.fits modeM0/AS1T05_124T01_9000005712_41874cztM0_level2_quad_clean.evt
Size (bytes)1,148,696,640241,701,120
Size1.1 GB 230.5 MB
Events in quadrant A11,093,6541,578,980
Events in quadrant B7,095,2141,707,907
Events in quadrant C8,854,4311,564,565
Events in quadrant D14,276,6341,395,151

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430083
B0321223
C0358033
D0532133

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155269376.035038%
B15527290.186771%
C155264993.213964%
D1552613828.901198%

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 19673 15529 760 760 3.86% 4.89%
B 19674 15530 1 1 0.01% 0.01%
C 19673 15529 467 467 2.37% 3.01%
D 19673 15529 1351 1351 6.87% 8.70%

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 14 24 3366207 9986.78 1645 1614 336.9
A 10 83 1276827 3785.09 1645 1614 336.9
A 14 250 46900 134.42 1645 1614 336.9
B 0 156 309470 946.07 1677 1628 325.4
B 12 0 52861 157.45 1677 1628 325.4
B 0 245 50387 149.85 1677 1628 325.4
C 0 10 1761531 4683.41 1602 1610 375.8
C 15 214 606796 1610.49 1602 1610 375.8
C 14 254 148080 389.78 1602 1610 375.8
D 12 79 5249354 13516.84 1589 1544 388.2
D 2 249 1414537 3639.46 1589 1544 388.2
D 13 249 944606 2429.05 1589 1544 388.2

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