ASTROSAT CZTI

Data Quality Report

Orbit 47216

Creation date: 2024-06-27T23:32:58.641688
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/AS1A13_019T01_9000006302_47216cztM0_level2.fits modeM0/AS1A13_019T01_9000006302_47216cztM0_level2_quad_clean.evt
Size (bytes)669,360,960105,065,280
Size638.4 MB 100.2 MB
Events in quadrant A7,640,957700,315
Events in quadrant B3,694,618758,546
Events in quadrant C3,055,854727,204
Events in quadrant D9,876,565535,402

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276271
B0152025
C0136751
D0338631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65915508.344712%
B65901782.701062%
C6590600.910470%
D6591173426.308603%

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 7586 6591 205 205 2.70% 3.11%
B 7585 6590 40 40 0.53% 0.61%
C 7585 6590 4 4 0.05% 0.06%
D 7586 6591 2081 2081 27.43% 31.57%

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 3600172 22792.29 760 743 157.9
A 9 191 694771 4394.72 760 743 157.9
A 15 235 373808 2362.32 760 743 157.9
B 5 32 154662 988.85 779 754 155.6
B 0 190 131244 838.39 779 754 155.6
B 4 21 117471 749.9 779 754 155.6
C 14 254 66806 367.72 762 764 179.6
C 3 233 7495 37.48 762 764 179.6
C 15 208 5371 25.65 762 764 179.6
D 6 112 6750943 36807.64 725 702 183.4
D 12 233 129672 703.25 725 702 183.4
D 10 253 74540 402.62 725 702 183.4

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