ASTROSAT CZTI

Data Quality Report

Orbit 13201

Creation date: 2024-06-27T16:37:38.075536
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/AS1A04_104T04_9000001966_13201cztM0_level2.evt modeM0/AS1A04_104T04_9000001966_13201cztM0_level2_quad_clean.evt
Size (bytes)755,922,24088,813,440
Size720.9 MB 84.7 MB
Events in quadrant A3,068,592603,794
Events in quadrant B3,724,892616,427
Events in quadrant C3,063,760615,387
Events in quadrant D12,613,802417,400

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131283
B0150732
C0132142
D0417052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6239510.817439%
B62392493.991024%
C6239380.609072%
D6239415366.565155%

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 7530 6242 0 0 0.00% 0.00%
B 7530 6242 105 105 1.39% 1.68%
C 7530 6242 4 4 0.05% 0.06%
D 7530 6242 3552 3552 47.17% 56.90%

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 1 162 26007 159.05 778 762 158.7
A 4 2 17985 108.51 778 762 158.7
A 9 143 11332 66.59 778 762 158.7
B 4 239 445763 3010.43 778 761 147.8
B 4 173 111821 751.32 778 761 147.8
B 3 209 44333 294.76 778 761 147.8
C 15 208 82485 464.72 764 770 175.8
C 13 61 5519 27.01 764 770 175.8
C 8 222 1975 6.85 764 770 175.8
D 13 122 10188215 81854.5 514 501 124.5
D 1 52 400208 3211.5 514 501 124.5
D 14 34 22391 175.88 514 501 124.5

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