ASTROSAT CZTI

Data Quality Report

Orbit 16795

Creation date: 2024-06-27T17:28:04.308594
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_004T07_9000002492_16795cztM0_level2.evt modeM0/AS1A05_004T07_9000002492_16795cztM0_level2_quad_clean.evt
Size (bytes)143,208,00034,427,520
Size136.6 MB 32.8 MB
Events in quadrant A948,093231,572
Events in quadrant B1,017,220233,295
Events in quadrant C1,111,480225,673
Events in quadrant D1,134,978219,338

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040091
B041921
C045211
D045421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1808603.318584%
B1808814.480088%
C1808824.535398%
D1808904.977876%

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 2199 1810 0 0 0.00% 0.00%
B 2199 1810 14 14 0.64% 0.77%
C 2199 1810 0 0 0.00% 0.00%
D 2199 1810 30 30 1.36% 1.66%

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 15 174 52260 1052.42 231 225 49.4
A 10 234 3957 75.48 231 225 49.4
A 9 143 3129 58.73 231 225 49.4
B 0 229 37913 824.24 227 220 45.7
B 15 35 28121 610.12 227 220 45.7
B 0 189 26666 578.3 227 220 45.7
C 3 233 149867 2747.97 223 223 54.5
C 0 207 39513 721.5 223 223 54.5
C 14 238 34352 626.72 223 223 54.5
D 1 52 159363 2756.46 228 221 57.7
D 12 110 50865 877.19 228 221 57.7
D 2 33 45871 790.69 228 221 57.7

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