ASTROSAT CZTI

Data Quality Report

Orbit 16692

Creation date: 2024-06-27T17:26:18.079554
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/AS1A05_225T01_9000002470_16692cztM0_level2.evt modeM0/AS1A05_225T01_9000002470_16692cztM0_level2_quad_clean.evt
Size (bytes)589,913,28081,659,520
Size562.6 MB 77.9 MB
Events in quadrant A5,651,321489,104
Events in quadrant B3,326,907539,978
Events in quadrant C3,065,487521,199
Events in quadrant D5,410,250497,166

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208842
B0136712
C0128652
D0203762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A608577912.801972%
B60851051.725555%
C60851011.659819%
D60852814.617913%

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 7096 6087 527 527 7.43% 8.66%
B 7096 6087 15 15 0.21% 0.25%
C 7096 6087 0 0 0.00% 0.00%
D 7096 6087 138 138 1.94% 2.27%

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 15 174 2652607 18034.3 733 718 147.0
A 9 143 118301 799.63 733 718 147.0
A 15 190 36578 243.87 733 718 147.0
B 15 35 119618 813.99 770 754 146.0
B 15 222 56264 380.14 770 754 146.0
B 0 229 44137 297.09 770 754 146.0
C 14 238 113986 648.69 745 751 174.6
C 3 233 42811 240.95 745 751 174.6
C 13 61 5509 27.26 745 751 174.6
D 2 16 1113648 6159.85 748 727 180.7
D 1 52 981453 5428.17 748 727 180.7
D 5 222 333924 1844.2 748 727 180.7

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