ASTROSAT CZTI

Data Quality Report

Orbit 15293

Creation date: 2024-06-27T17:06:20.629511
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_223T01_9000002258_15293cztM0_level2.evt modeM0/AS1A04_223T01_9000002258_15293cztM0_level2_quad_clean.evt
Size (bytes)1,304,150,400217,837,440
Size1.2 GB 207.7 MB
Events in quadrant A8,629,3071,340,095
Events in quadrant B11,898,5031,361,764
Events in quadrant C9,180,7921,337,814
Events in quadrant D8,530,2001,276,496

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380465
B0469504
C0384754
D0386484

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185791981.065719%
B1857913197.099413%
C185791570.845040%
D185791730.931159%

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 20795 18582 3 3 0.01% 0.02%
B 20795 18581 929 929 4.47% 5.00%
C 20795 18583 1 1 0.00% 0.01%
D 20795 18583 47 47 0.23% 0.25%

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 9 143 43042 90.7 2229 2180 450.5
A 0 226 19645 38.77 2229 2180 450.5
A 13 252 18326 35.84 2229 2180 450.5
B 10 16 2992155 7144.73 2163 2109 418.5
B 0 229 129856 305.25 2163 2109 418.5
B 0 205 67746 156.84 2163 2109 418.5
C 3 233 639342 1280.28 2158 2173 497.7
C 3 9 76285 148.91 2158 2173 497.7
C 7 247 32043 60.02 2158 2173 497.7
D 7 38 118499 217.78 2157 2092 534.5
D 2 234 75047 136.49 2157 2092 534.5
D 10 70 69125 125.41 2157 2092 534.5

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