ASTROSAT CZTI

Data Quality Report

Orbit 17624

Creation date: 2024-06-27T17:38:47.798386
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_071T01_9000002610_17624cztM0_level2.evt modeM0/AS1T03_071T01_9000002610_17624cztM0_level2_quad_clean.evt
Size (bytes)594,936,000101,079,360
Size567.4 MB 96.4 MB
Events in quadrant A3,778,119640,028
Events in quadrant B3,934,280641,380
Events in quadrant C4,336,457613,960
Events in quadrant D5,421,162604,513

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165352
B0169112
C0179952
D0218442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8073380.470705%
B8074740.916522%
C80741371.696805%
D80734916.082002%

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 9703 8074 0 0 0.00% 0.00%
B 9704 8074 2 2 0.02% 0.02%
C 9704 8076 7 7 0.07% 0.09%
D 9703 8075 286 286 2.95% 3.54%

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 14 237 13522 63.46 979 959 198.0
A 0 226 8451 37.85 979 959 198.0
A 3 137 7603 33.56 979 959 198.0
B 0 230 40083 208.85 976 950 187.4
B 4 80 31512 163.1 976 950 187.4
B 12 111 22836 116.8 976 950 187.4
C 3 233 419521 1912.43 933 936 218.9
C 14 238 144778 657.18 933 936 218.9
C 0 207 87061 393.49 933 936 218.9
D 1 52 1587653 7011.61 927 900 226.3
D 13 189 173145 761.12 927 900 226.3
D 7 223 39922 172.43 927 900 226.3

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