ASTROSAT CZTI

Data Quality Report

Orbit 47767

Creation date: 2024-07-28T17:14:57.540855
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/AS1C09_004T02_9000006348_47767cztM0_level2.fits modeM0/AS1C09_004T02_9000006348_47767cztM0_level2_quad_clean.evt
Size (bytes)492,186,240105,998,400
Size469.4 MB 101.1 MB
Events in quadrant A6,905,840703,143
Events in quadrant B3,957,078717,935
Events in quadrant C3,335,897691,438
Events in quadrant D3,510,002638,356

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259641
B0161641
C0147751
D0151431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65752994.547529%
B65762163.284672%
C65761582.402676%
D65761902.889294%

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 7490 6576 5 5 0.07% 0.08%
B 7491 6577 48 48 0.64% 0.73%
C 7491 6577 83 83 1.11% 1.26%
D 7491 6577 105 105 1.40% 1.60%

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 4006398 26538.61 725 709 150.9
A 14 248 47385 309.24 725 709 150.9
A 9 191 23715 152.42 725 709 150.9
B 0 186 612647 4366.68 724 702 140.1
B 5 255 222106 1579.88 724 702 140.1
B 0 200 77016 544.56 724 702 140.1
C 12 2 526898 3183.16 707 709 165.3
C 14 254 35583 210.97 707 709 165.3
C 13 61 4737 24.37 707 709 165.3
D 2 249 254128 1435.89 715 692 176.5
D 2 165 131500 741.12 715 692 176.5
D 7 67 107219 603.55 715 692 176.5

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