ASTROSAT CZTI

Data Quality Report

Orbit 26347

Creation date: 2024-06-27T19:27:44.248698
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/AS1A09_038T02_9000003798_26347cztM0_level2.evt modeM0/AS1A09_038T02_9000003798_26347cztM0_level2_quad_clean.evt
Size (bytes)463,642,560135,633,600
Size442.2 MB 129.4 MB
Events in quadrant A3,178,722907,697
Events in quadrant B3,258,845932,077
Events in quadrant C3,704,774899,049
Events in quadrant D3,430,989889,451

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140210
B0140800
C0152180
D0148180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6895420.609137%
B6895691.000725%
C68951712.480058%
D6895590.855693%

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 7605 6896 0 0 0.00% 0.00%
B 7605 6896 3 3 0.04% 0.04%
C 7605 6896 22 22 0.29% 0.32%
D 7605 6896 9 9 0.12% 0.13%

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 6 16 24572 145.7 817 798 163.2
A 13 254 10644 60.34 817 798 163.2
A 3 137 7464 40.85 817 798 163.2
B 12 111 18746 115.93 822 799 154.8
B 0 230 17941 110.73 822 799 154.8
B 11 111 16697 102.7 822 799 154.8
C 3 233 434604 2317.58 800 804 187.2
C 14 238 130691 693.92 800 804 187.2
C 2 16 18582 94.98 800 804 187.2
D 1 52 354751 1864.23 803 784 189.9
D 2 234 26387 134.84 803 784 189.9
D 11 176 14181 70.56 803 784 189.9

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