ASTROSAT CZTI

Data Quality Report

Orbit 10644

Creation date: 2024-06-27T16:01:55.568739
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/AS1T01_191T01_9000001536_10644cztM0_level2.evt modeM0/AS1T01_191T01_9000001536_10644cztM0_level2_quad_clean.evt
Size (bytes)491,935,680104,014,080
Size469.1 MB 99.2 MB
Events in quadrant A3,220,399685,268
Events in quadrant B4,020,485682,231
Events in quadrant C3,717,344674,530
Events in quadrant D3,493,652649,877

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136672
B0160541
C0152881
D0145601

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65661382.101736%
B65663204.873591%
C65663084.690832%
D65661301.979896%

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 6826 6568 17 17 0.25% 0.26%
B 6826 6568 112 112 1.64% 1.71%
C 6826 6568 151 151 2.21% 2.30%
D 6826 6568 22 22 0.32% 0.33%

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 13 251 82949 498.1 786 770 165.0
A 15 239 68482 410.41 786 770 165.0
A 1 162 12948 73.81 786 770 165.0
B 4 239 858603 5676.29 777 762 151.1
B 0 214 54088 352.86 777 762 151.1
B 0 219 33870 219.07 777 762 151.1
C 4 254 623839 3516.68 757 766 177.2
C 14 234 113764 637.77 757 766 177.2
C 4 175 21849 118.99 757 766 177.2
D 2 16 112999 601.26 762 742 186.7
D 12 233 107343 570.97 762 742 186.7
D 8 195 101766 541.1 762 742 186.7

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