ASTROSAT CZTI

Data Quality Report

Orbit 38767

Creation date: 2024-06-27T21:56:09.597714
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_051T01_9000005394_38767cztM0_level2.fits modeM0/AS1A12_051T01_9000005394_38767cztM0_level2_quad_clean.evt
Size (bytes)303,678,72088,107,840
Size289.6 MB 84.0 MB
Events in quadrant A2,627,222593,873
Events in quadrant B2,280,204622,538
Events in quadrant C2,944,431581,525
Events in quadrant D3,011,031530,051

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106073
B098022
C0115692
D0121152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A485350.103029%
B485380.164846%
C4853861.772100%
D4853911.875129%

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 7006 4854 6 6 0.09% 0.12%
B 7006 4854 2 2 0.03% 0.04%
C 7006 4854 70 70 1.00% 1.44%
D 7006 4854 77 77 1.10% 1.59%

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 368244 3224.29 565 553 114.0
A 13 248 62726 545.2 565 553 114.0
A 13 254 7141 57.77 565 553 114.0
B 0 230 13947 122.4 569 553 109.4
B 12 111 13452 117.88 569 553 109.4
B 11 111 12465 108.86 569 553 109.4
C 15 208 380251 2908.76 562 567 130.5
C 15 214 216792 1656.5 562 567 130.5
C 14 254 80817 614.79 562 567 130.5
D 10 118 219155 1638.79 554 539 133.4
D 2 16 215910 1614.46 554 539 133.4
D 5 222 163688 1223.0 554 539 133.4

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