ASTROSAT CZTI

Data Quality Report

Orbit 19831

Creation date: 2024-06-27T18:07:38.586803
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/AS1T03_118T01_9000002962_19831cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19831cztM0_level2_quad_clean.evt
Size (bytes)455,774,400105,310,080
Size434.7 MB 100.4 MB
Events in quadrant A3,268,916696,375
Events in quadrant B3,341,023712,279
Events in quadrant C3,194,788686,067
Events in quadrant D3,578,893663,475

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135842
B0137512
C0132392
D0147032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61831021.649685%
B61821081.747007%
C6182801.294080%
D6182691.116144%

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 7498 6185 42 42 0.56% 0.68%
B 7497 6184 52 52 0.69% 0.84%
C 7497 6184 0 0 0.00% 0.00%
D 7497 6184 35 35 0.47% 0.57%

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 14 238 183788 1145.62 798 783 159.7
A 14 254 10485 60.74 798 783 159.7
A 5 16 6959 38.66 798 783 159.7
B 3 64 95816 631.2 802 783 150.6
B 7 220 55387 362.68 802 783 150.6
B 0 190 23456 150.59 802 783 150.6
C 14 238 122659 662.99 787 796 183.8
C 3 233 6354 30.24 787 796 183.8
C 13 61 5463 25.39 787 796 183.8
D 1 52 350158 1824.16 787 765 191.5
D 10 230 132598 688.29 787 765 191.5
D 7 96 45359 232.82 787 765 191.5

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