ASTROSAT CZTI

Data Quality Report

Orbit 40491

Creation date: 2024-06-27T22:16:45.534482
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_022T01_9000005540_40491cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40491cztM0_level2_quad_clean.evt
Size (bytes)345,499,20085,291,200
Size329.5 MB 81.3 MB
Events in quadrant A2,808,807611,855
Events in quadrant B2,675,918621,097
Events in quadrant C2,500,923583,730
Events in quadrant D4,402,844406,083

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114433
B0113532
C0104942
D0165922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A513190.175404%
B5131551.071916%
C513170.136426%
D5131151129.448451%

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 7254 5132 3 3 0.04% 0.06%
B 7254 5132 42 42 0.58% 0.82%
C 7254 5132 3 3 0.04% 0.06%
D 7254 5132 549 549 7.57% 10.70%

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 10 83 481247 4137.62 578 568 116.2
A 13 248 46411 394.61 578 568 116.2
A 2 79 18566 154.92 578 568 116.2
B 4 170 235520 2133.45 570 554 110.1
B 5 255 98108 885.77 570 554 110.1
B 0 230 41506 371.84 570 554 110.1
C 15 214 225320 1732.66 561 566 129.7
C 9 187 46452 353.74 561 566 129.7
C 10 20 18106 135.22 561 566 129.7
D 2 250 2049375 17473.0 475 462 117.3
D 12 191 185414 1577.26 475 462 117.3
D 13 249 125717 1068.17 475 462 117.3

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