ASTROSAT CZTI

Data Quality Report

Orbit 30845

Creation date: 2024-06-27T20:20:15.972695
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/AS1A10_071T40_9000004458_30845cztM0_level2.evt modeM0/AS1A10_071T40_9000004458_30845cztM0_level2_quad_clean.evt
Size (bytes)763,427,52079,580,160
Size728.1 MB 75.9 MB
Events in quadrant A3,301,337552,466
Events in quadrant B11,186,922405,669
Events in quadrant C3,787,854508,331
Events in quadrant D4,419,251503,241

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134522
B0374452
C0151292
D0173222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6281350.557236%
B6281344354.816112%
C62811852.945391%
D62812944.680783%

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 7561 6282 0 0 0.00% 0.00%
B 7561 6281 2988 2988 39.52% 47.57%
C 7561 6281 56 56 0.74% 0.89%
D 7561 6282 242 242 3.20% 3.85%

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 13 254 11526 62.87 856 842 169.9
A 3 137 8089 42.64 856 842 169.9
A 0 226 7240 37.65 856 842 169.9
B 6 36 6850590 52688.55 696 680 130.0
B 6 159 1527397 11743.29 696 680 130.0
B 5 255 30755 231.33 696 680 130.0
C 0 10 226967 1204.97 802 809 187.7
C 3 233 207031 1098.75 802 809 187.7
C 14 238 133055 704.61 802 809 187.7
D 8 195 670179 3660.21 781 765 182.9
D 13 174 636254 3474.71 781 765 182.9
D 12 233 40732 218.53 781 765 182.9

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