ASTROSAT CZTI

Data Quality Report

Orbit 26194

Creation date: 2024-06-27T19:25:57.745705
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/AS1C05_007T01_9000003786_26194cztM0_level2.evt modeM0/AS1C05_007T01_9000003786_26194cztM0_level2_quad_clean.evt
Size (bytes)483,140,16090,466,560
Size460.8 MB 86.3 MB
Events in quadrant A3,199,113584,446
Events in quadrant B3,267,940591,665
Events in quadrant C3,534,035553,748
Events in quadrant D4,176,289543,259

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136890
B0138390
C0147400
D0169030

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6691230.343745%
B6691390.582873%
C66901161.733931%
D66912253.362726%

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 7611 6692 0 0 0.00% 0.00%
B 7611 6692 5 5 0.07% 0.07%
C 7610 6691 18 18 0.24% 0.27%
D 7610 6691 224 224 2.94% 3.35%

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 0 13 21383 122.65 824 806 167.8
A 13 254 11395 63.12 824 806 167.8
A 3 137 7646 40.77 824 806 167.8
B 5 172 31109 192.2 820 798 157.7
B 0 190 28372 174.84 820 798 157.7
B 12 111 19127 116.22 820 798 157.7
C 3 233 220085 1188.03 780 785 184.6
C 2 16 146650 790.2 780 785 184.6
C 14 238 123739 666.09 780 785 184.6
D 1 52 522932 2769.3 781 764 188.6
D 7 38 436814 2312.57 781 764 188.6
D 12 233 219276 1158.87 781 764 188.6

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