ASTROSAT CZTI

Data Quality Report

Orbit 10927

Creation date: 2024-06-27T16:05:54.235509
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_068T01_9000001580_10927cztM0_level2.evt modeM0/AS1G08_068T01_9000001580_10927cztM0_level2_quad_clean.evt
Size (bytes)502,470,720100,863,360
Size479.2 MB 96.2 MB
Events in quadrant A4,308,436662,449
Events in quadrant B4,039,563672,055
Events in quadrant C3,045,496664,052
Events in quadrant D3,411,379631,435

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01701268
B01603237
C01292628
D01386914

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60773145.167023%
B60792694.425070%
C6079330.542852%
D6086821.347355%

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 7387 6091 174 174 2.36% 2.86%
B 7387 6093 111 111 1.50% 1.82%
C 7387 6093 0 0 0.00% 0.00%
D 7387 6093 22 22 0.30% 0.36%

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 8 5 895035 5611.49 801 788 159.4
A 15 223 213655 1335.76 801 788 159.4
A 15 239 58260 360.64 801 788 159.4
B 4 239 851461 5719.73 797 782 148.7
B 0 214 23929 155.63 797 782 148.7
B 11 51 23673 153.91 797 782 148.7
C 13 61 5849 28.62 777 784 177.0
C 12 4 5431 26.26 777 784 177.0
C 4 222 4067 18.55 777 784 177.0
D 8 195 126350 678.26 781 762 185.2
D 13 152 67135 358.46 781 762 185.2
D 13 104 55339 294.75 781 762 185.2

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