ASTROSAT CZTI

Data Quality Report

Orbit 08803

Creation date: 2024-06-27T15:37:27.115654
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/AS1A03_135T01_9000001226_08803cztM0_level2.evt modeM0/AS1A03_135T01_9000001226_08803cztM0_level2_quad_clean.evt
Size (bytes)644,068,80091,514,880
Size614.2 MB 87.3 MB
Events in quadrant A3,788,709602,792
Events in quadrant B3,392,772604,097
Events in quadrant C3,162,006590,851
Events in quadrant D8,691,317489,083

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157393
B0146632
C0142782
D0306322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6951811.165300%
B6951680.978277%
C6951160.230183%
D6951199128.643361%

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 7606 6951 26 26 0.34% 0.37%
B 7606 6951 6 6 0.08% 0.09%
C 7606 6952 0 0 0.00% 0.00%
D 7606 6951 1910 1910 25.11% 27.48%

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 8 5 496672 2906.26 838 822 170.6
A 13 248 38162 218.86 838 822 170.6
A 13 251 11379 61.88 838 822 170.6
B 10 16 62121 381.12 840 820 160.8
B 5 255 35018 212.62 840 820 160.8
B 12 111 17375 102.93 840 820 160.8
C 13 61 6095 28.06 807 812 188.3
C 8 128 4384 18.97 807 812 188.3
C 1 16 3613 14.88 807 812 188.3
D 2 16 5439483 31547.68 674 657 172.4
D 1 52 384775 2228.06 674 657 172.4
D 7 71 100872 581.29 674 657 172.4

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