ASTROSAT CZTI

Data Quality Report

Orbit 37572

Creation date: 2024-06-27T21:41:42.158127
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_053T01_9000005338_37572cztM0_level2.evt modeM0/AS1T05_053T01_9000005338_37572cztM0_level2_quad_clean.evt
Size (bytes)334,157,76065,223,360
Size318.7 MB 62.2 MB
Events in quadrant A2,281,195418,662
Events in quadrant B2,279,699425,219
Events in quadrant C2,111,663428,913
Events in quadrant D3,154,896399,785

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091794
B095241
C088781
D0122871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4300120.279070%
B4301370.860265%
C430180.186003%
D43012154.998837%

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 5644 4302 3 3 0.05% 0.07%
B 5644 4302 25 25 0.44% 0.58%
C 5644 4302 5 5 0.09% 0.12%
D 5644 4302 193 193 3.42% 4.49%

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 230893 2295.79 490 482 100.4
A 15 222 70948 702.12 490 482 100.4
A 12 189 30950 303.58 490 482 100.4
B 5 172 111546 1176.86 487 475 94.4
B 5 255 50745 532.64 487 475 94.4
B 0 197 38960 407.77 487 475 94.4
C 15 214 182340 1609.6 477 479 113.0
C 0 10 48263 422.92 477 479 113.0
C 15 159 6201 50.64 477 479 113.0
D 1 47 421560 3570.16 469 455 118.0
D 12 233 239640 2027.83 469 455 118.0
D 2 153 168677 1426.2 469 455 118.0

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