ASTROSAT CZTI

Data Quality Report

Orbit 22175

Creation date: 2024-06-27T18:37:46.861905
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/AS1A07_007T03_9000003280_22175cztM0_level2.evt modeM0/AS1A07_007T03_9000003280_22175cztM0_level2_quad_clean.evt
Size (bytes)458,930,88071,170,560
Size437.7 MB 67.9 MB
Events in quadrant A3,415,029440,568
Events in quadrant B3,414,433445,862
Events in quadrant C3,350,475417,210
Events in quadrant D3,289,623410,185

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137522
B0138152
C0135972
D0135702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6322630.996520%
B6322881.391965%
C6322891.407782%
D6321520.822655%

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 7672 6323 5 5 0.07% 0.08%
B 7672 6323 0 0 0.00% 0.00%
C 7672 6323 0 0 0.00% 0.00%
D 7671 6322 24 24 0.31% 0.38%

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 15 174 47207 269.84 874 859 171.8
A 13 254 11110 59.68 874 859 171.8
A 0 226 7503 38.68 874 859 171.8
B 12 111 18770 111.68 869 850 160.5
B 11 111 16744 99.05 869 850 160.5
B 14 111 15361 90.43 869 850 160.5
C 14 238 133715 704.45 821 830 188.6
C 0 10 7847 37.2 821 830 188.6
C 13 61 5773 26.2 821 830 188.6
D 13 172 40792 201.99 832 812 197.9
D 7 236 28316 138.96 832 812 197.9
D 7 221 26915 131.88 832 812 197.9

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