ASTROSAT CZTI

Data Quality Report

Orbit 20210220_A10_053T34_9000004192_level2

Creation date: 2021-02-22T10:17:43.562224
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_053T34_9000004192cztM0_level2_bc.evt modeM0/AS1A10_053T34_9000004192cztM0_level2_quad_clean.evt
Size (bytes)2,224,753,920388,287,360
Size2.1 GB 370.3 MB
Events in quadrant A6,600,9992,535,612
Events in quadrant B8,218,8332,525,952
Events in quadrant C31,064,0772,227,240
Events in quadrant D19,311,1942,261,131

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06540
B06540
C06540
D06540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0662050
B0726720
C01453680
D01111500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A321132510.781615%
B321135551.728272%
C32113687521.408775%
D3211330709.559991%

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 34238 32114 1 1 0.00% 0.00%
B 34238 32114 6 6 0.02% 0.02%
C 34238 32115 1232 1232 3.60% 3.84%
D 34238 32114 723 723 2.11% 2.25%

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 15 169 82332 221.42 1673 1642 364.4
A 13 254 63412 169.5 1673 1642 364.4
A 0 13 40526 106.7 1673 1642 364.4
B 0 183 732413 2298.74 1675 1631 317.9
B 10 245 335993 1051.77 1675 1631 317.9
B 0 229 291992 913.36 1675 1631 317.9
C 3 233 25115355 69886.58 1521 1512 359.4
C 2 114 61578 167.15 1521 1512 359.4
C 8 128 20300 52.28 1521 1512 359.4
D 1 52 8529958 23033.37 1588 1535 370.3
D 8 195 3061844 8265.21 1588 1535 370.3
D 2 250 607287 1636.0 1588 1535 370.3

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