ASTROSAT CZTI

Data Quality Report

Orbit 27396

Creation date: 2024-06-27T19:39:40.622548
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_27396cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27396cztM0_level2_quad_clean.evt
Size (bytes)1,046,589,120211,213,440
Size998.1 MB 201.4 MB
Events in quadrant A7,236,0281,360,412
Events in quadrant B7,364,4961,353,558
Events in quadrant C7,519,1801,301,400
Events in quadrant D8,516,4011,301,400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318600
B0321460
C0325660
D0364640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15660600.383142%
B15661890.568291%
C156611931.232361%
D156612011.283443%

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 16895 15662 0 0 0.00% 0.00%
B 16896 15663 1 1 0.01% 0.01%
C 16896 15662 21 21 0.12% 0.13%
D 16896 15662 126 126 0.75% 0.80%

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 13 254 24760 61.18 1871 1831 374.8
A 3 137 18144 43.53 1871 1831 374.8
A 0 226 16139 38.18 1871 1831 374.8
B 12 111 44064 119.92 1847 1800 352.4
B 11 111 39194 106.1 1847 1800 352.4
B 0 229 36300 97.89 1847 1800 352.4
C 14 238 283023 669.33 1784 1794 420.2
C 2 16 130784 307.0 1784 1794 420.2
C 15 208 127538 299.27 1784 1794 420.2
D 12 227 676447 1574.05 1802 1754 428.6
D 2 250 480089 1115.95 1802 1754 428.6
D 1 52 176698 408.14 1802 1754 428.6

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