ASTROSAT CZTI

Data Quality Report

Orbit 13176

Creation date: 2024-06-27T16:37:15.085132
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/AS1G08_034T01_9000001944_13176cztM0_level2.evt modeM0/AS1G08_034T01_9000001944_13176cztM0_level2_quad_clean.evt
Size (bytes)13,639,6802,805,120
Size13.0 MB 2.7 MB
Events in quadrant A132,82423,512
Events in quadrant B71,0919,889
Events in quadrant C123,63516,651
Events in quadrant D63,4507,307

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078237264
B091398838
C077277162
D086578383

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02733597094080
B0-1-1
C0-1-1
D0-1-1

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28010.357143%
B15110.662252%
C28310.353357%
D13810.724638%

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 7621 559 0 0 0.00% 0.00%
B 7619 301 0 0 0.00% 0.00%
C 7596 565 0 0 0.00% 0.00%
D 7085 275 0 0 0.00% 0.00%

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 12 189 6072 700.06 32 31 8.6
A 1 162 820 91.43 32 31 8.6
A 15 239 712 78.92 32 31 8.6
B 4 239 2054 384.3 17 16 5.3
B 0 219 433 78.63 17 16 5.3
B 12 111 392 70.9 17 16 5.3
C 13 61 220 20.54 31 31 9.2
C 15 208 132 10.98 31 31 9.2
C 8 128 125 10.21 31 31 9.2
D 1 52 3822 701.07 15 14 5.4
D 10 157 1155 210.06 15 14 5.4
D 2 234 662 119.3 15 14 5.4

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