ASTROSAT CZTI

Data Quality Report

Orbit 27141

Creation date: 2024-06-27T19:36:56.779961
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_244T01_9000003912_27141cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27141cztM0_level2_quad_clean.evt
Size (bytes)521,498,88096,906,240
Size497.3 MB 92.4 MB
Events in quadrant A3,308,698648,248
Events in quadrant B3,492,691660,248
Events in quadrant C3,475,116623,963
Events in quadrant D5,097,208569,921

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136490
B0142080
C0141010
D0193030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6192560.904393%
B6192651.049742%
C61921191.921835%
D61914968.011630%

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 7547 6193 10 10 0.13% 0.16%
B 7547 6193 25 25 0.33% 0.40%
C 7547 6193 17 17 0.23% 0.27%
D 7546 6192 343 343 4.55% 5.54%

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 13 248 47512 286.77 825 812 162.8
A 14 235 43107 259.72 825 812 162.8
A 8 192 18046 105.83 825 812 162.8
B 10 246 153057 993.9 823 803 153.2
B 3 112 60952 392.65 823 803 153.2
B 10 245 31244 198.72 823 803 153.2
C 2 16 216669 1162.78 797 803 185.6
C 14 238 127205 680.88 797 803 185.6
C 15 208 20988 108.73 797 803 185.6
D 1 52 1748127 9035.13 767 753 193.4
D 7 38 248256 1279.76 767 753 193.4
D 2 250 163344 840.71 767 753 193.4

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