ASTROSAT CZTI

Data Quality Report

Orbit 27127

Creation date: 2024-06-27T19:36:47.992875
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_27127cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27127cztM0_level2_quad_clean.evt
Size (bytes)633,116,16093,168,000
Size603.8 MB 88.9 MB
Events in quadrant A4,118,907615,303
Events in quadrant B3,794,856624,769
Events in quadrant C3,227,255609,368
Events in quadrant D7,611,821536,793

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164210
B0151510
C0133030
D0268380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62251392.232932%
B62242043.277635%
C6224841.349614%
D6224120019.280206%

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 7505 6226 103 103 1.37% 1.65%
B 7504 6225 137 137 1.83% 2.20%
C 7504 6225 0 0 0.00% 0.00%
D 7504 6225 1221 1221 16.27% 19.61%

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 6 16 636988 4027.05 802 787 158.0
A 14 235 274115 1730.12 802 787 158.0
A 13 248 72810 455.89 802 787 158.0
B 10 245 461887 3086.44 796 778 149.4
B 7 205 76255 505.21 796 778 149.4
B 0 189 42460 279.0 796 778 149.4
C 14 238 126687 684.17 785 793 184.0
C 2 16 30825 163.21 785 793 184.0
C 15 208 11949 60.63 785 793 184.0
D 1 52 3911303 20511.72 730 716 190.7
D 7 38 659224 3453.99 730 716 190.7
D 2 250 192009 1003.36 730 716 190.7

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