ASTROSAT CZTI

Data Quality Report

Orbit 12482

Creation date: 2024-06-27T16:28:02.057154
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/AS1A04_174T01_9000001850_12482cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12482cztM0_level2_quad_clean.evt
Size (bytes)651,749,76099,627,840
Size621.6 MB 95.0 MB
Events in quadrant A5,559,289604,433
Events in quadrant B4,868,420616,686
Events in quadrant C4,185,066616,604
Events in quadrant D4,538,580578,441

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219992
B0198901
C0180781
D0192521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86585366.190806%
B86585856.756757%
C86582663.072303%
D86583744.319704%

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 8899 8659 41 41 0.46% 0.47%
B 8899 8660 47 47 0.53% 0.54%
C 8899 8661 0 0 0.00% 0.00%
D 8899 8659 77 77 0.87% 0.89%

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 23 971782 4358.87 1080 1056 222.7
A 12 189 209138 934.35 1080 1056 222.7
A 0 226 71940 318.29 1080 1056 222.7
B 4 239 472714 2271.58 1081 1053 207.6
B 0 85 82953 394.44 1081 1053 207.6
B 0 214 31724 147.72 1081 1053 207.6
C 13 61 7785 26.97 1070 1078 248.7
C 8 128 4564 14.02 1070 1078 248.7
C 8 112 3454 9.55 1070 1078 248.7
D 1 52 362488 1403.53 1056 1023 257.5
D 7 71 92146 353.82 1056 1023 257.5
D 2 234 31279 117.48 1056 1023 257.5

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