ASTROSAT CZTI

Data Quality Report

Orbit 40495

Creation date: 2024-06-27T22:16:48.977430
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_40495cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40495cztM0_level2_quad_clean.evt
Size (bytes)406,543,68095,137,920
Size387.7 MB 90.7 MB
Events in quadrant A3,089,343648,402
Events in quadrant B5,190,474633,913
Events in quadrant C2,778,308639,201
Events in quadrant D3,524,002540,002

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129953
B0194722
C0122242
D0147402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5998110.183394%
B59983806.335445%
C5998100.166722%
D59985909.836612%

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 8684 6000 4 4 0.05% 0.07%
B 8684 6000 328 328 3.78% 5.47%
C 8684 6000 6 6 0.07% 0.10%
D 8684 6000 133 133 1.53% 2.22%

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 528495 4077.92 636 624 129.4
A 12 189 56395 430.84 636 624 129.4
A 2 79 15414 114.26 636 624 129.4
B 4 170 2581282 21371.9 621 602 120.8
B 0 230 133639 1101.75 621 602 120.8
B 3 112 15900 126.69 621 602 120.8
C 15 214 259062 1766.91 624 628 146.3
C 14 254 78503 532.43 624 628 146.3
C 0 10 5541 33.59 624 628 146.3
D 12 128 431946 2918.76 594 578 147.8
D 2 250 350716 2369.13 594 578 147.8
D 12 191 159424 1074.8 594 578 147.8

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