ASTROSAT CZTI

Data Quality Report

Orbit 26624

Creation date: 2024-06-27T19:31:08.291103
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/AS1A09_145T01_9000003848_26624cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26624cztM0_level2_quad_clean.evt
Size (bytes)729,008,64092,318,400
Size695.2 MB 88.0 MB
Events in quadrant A3,881,802629,462
Events in quadrant B4,963,063629,928
Events in quadrant C3,463,256609,527
Events in quadrant D9,302,816444,780

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157340
B0194810
C0143690
D0323220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69021472.129817%
B69033254.708098%
C6903921.332754%
D6903221632.101985%

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 7237 6903 70 70 0.97% 1.01%
B 7238 6904 153 153 2.11% 2.22%
C 7238 6904 3 3 0.04% 0.04%
D 7238 6904 1960 1960 27.08% 28.39%

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 0 13 531556 3019.48 865 849 175.8
A 13 254 12802 68.01 865 849 175.8
A 5 168 9055 46.69 865 849 175.8
B 0 189 1085785 6665.69 855 837 162.8
B 5 172 457827 2807.65 855 837 162.8
B 0 244 23803 141.1 855 837 162.8
C 14 238 135743 677.61 836 843 199.1
C 15 208 33715 165.12 836 843 199.1
C 3 233 33194 162.5 836 843 199.1
D 1 52 4410619 26306.48 687 669 167.6
D 7 80 1466368 8743.27 687 669 167.6
D 2 250 675302 4024.36 687 669 167.6

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