ASTROSAT CZTI

Data Quality Report

Orbit 17705

Creation date: 2024-06-27T17:39:49.128516
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_040T01_9000002628_17705cztM0_level2.evt modeM0/AS1T03_040T01_9000002628_17705cztM0_level2_quad_clean.evt
Size (bytes)510,791,04082,324,800
Size487.1 MB 78.5 MB
Events in quadrant A3,025,826527,071
Events in quadrant B3,215,824539,259
Events in quadrant C3,384,366514,857
Events in quadrant D5,413,808469,921

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132731
B0136161
C0138621
D0203191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63211332.104097%
B63221482.341031%
C63221241.961405%
D632264010.123379%

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 6936 6322 21 21 0.30% 0.33%
B 6937 6323 40 40 0.58% 0.63%
C 6937 6323 0 0 0.00% 0.00%
D 6937 6323 502 502 7.24% 7.94%

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 141553 920.03 750 732 153.1
A 0 226 6675 38.83 750 732 153.1
A 3 137 5582 31.69 750 732 153.1
B 7 220 75398 517.39 747 727 144.3
B 0 189 74664 512.3 747 727 144.3
B 10 245 64387 441.09 747 727 144.3
C 3 233 435160 2600.63 714 718 167.1
C 14 238 109637 652.0 714 718 167.1
C 5 218 40075 235.6 714 718 167.1
D 7 238 2642751 15546.55 700 678 169.9
D 13 232 35612 205.56 700 678 169.9
D 2 234 22993 131.31 700 678 169.9

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