ASTROSAT CZTI

Data Quality Report

Orbit 27367

Creation date: 2024-06-27T19:39:23.856332
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/AS1T03_249T01_9000003934_27367cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27367cztM0_level2_quad_clean.evt
Size (bytes)1,949,195,520315,622,080
Size1.8 GB 301.0 MB
Events in quadrant A11,378,0502,070,745
Events in quadrant B11,456,6512,075,184
Events in quadrant C20,079,5921,795,093
Events in quadrant D14,514,2831,982,599

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0492130
B0494220
C0752420
D0597920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A237701310.551115%
B237701630.685738%
C23770323213.596971%
D237704371.838452%

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 26771 23775 7 7 0.03% 0.03%
B 26771 23775 6 6 0.02% 0.03%
C 26771 23774 2409 2409 9.00% 10.13%
D 26771 23775 291 291 1.09% 1.22%

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 70245 117.13 2891 2837 575.5
A 12 96 60637 100.44 2891 2837 575.5
A 14 235 42597 69.09 2891 2837 575.5
B 15 32 82200 146.35 2865 2792 542.6
B 12 111 67255 118.81 2865 2792 542.6
B 11 111 60468 106.3 2865 2792 542.6
C 2 16 9565486 15949.81 2578 2599 599.6
C 14 238 406586 673.8 2578 2599 599.6
C 8 128 30766 46.98 2578 2599 599.6
D 1 52 3151976 4833.2 2770 2710 651.6
D 2 250 670787 1025.3 2770 2710 651.6
D 2 234 103430 154.58 2770 2710 651.6

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