ASTROSAT CZTI

Data Quality Report

Orbit 20634

Creation date: 2024-06-27T18:17:42.033098
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/AS1A05_007T06_9000003050_20634cztM0_level2.evt modeM0/AS1A05_007T06_9000003050_20634cztM0_level2_quad_clean.evt
Size (bytes)681,762,240105,154,560
Size650.2 MB 100.3 MB
Events in quadrant A4,064,958700,037
Events in quadrant B4,371,511691,358
Events in quadrant C4,334,701674,781
Events in quadrant D7,283,485511,215

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179243
B0187032
C0185142
D0277852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8737891.018656%
B87371441.648163%
C87371301.487925%
D8737163618.724963%

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 9742 8739 6 6 0.06% 0.07%
B 9742 8739 18 18 0.18% 0.21%
C 9742 8739 0 0 0.00% 0.00%
D 9742 8739 955 955 9.80% 10.93%

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 5 16 57982 271.39 1037 1013 209.9
A 15 174 12112 52.87 1037 1013 209.9
A 8 205 10021 42.91 1037 1013 209.9
B 7 220 147309 742.87 1030 1003 196.9
B 4 216 48341 240.36 1030 1003 196.9
B 12 111 24022 116.88 1030 1003 196.9
C 8 208 265134 1123.34 999 1005 235.1
C 14 238 154263 651.81 999 1005 235.1
C 3 233 9722 37.07 999 1005 235.1
D 1 20 3117242 14977.34 858 832 208.1
D 1 52 437958 2100.81 858 832 208.1
D 5 222 201756 965.63 858 832 208.1

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