ASTROSAT CZTI

Data Quality Report

Orbit 34846

Creation date: 2022-03-09T14:20:59.069100
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/AS1C07_005T01_9000004992_34846cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34846cztM0_level2_quad_clean.evt
Size (bytes)576,933,12099,008,640
Size550.2 MB 94.4 MB
Events in quadrant A6,628,567604,615
Events in quadrant B3,437,617680,505
Events in quadrant C3,045,194676,992
Events in quadrant D3,978,993641,166

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234153
B0138572
C0123242
D0156822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5642142225.203828%
B56421913.385324%
C5642981.736973%
D56421672.959943%

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 7134 5642 1195 1195 16.75% 21.18%
B 7135 5643 118 118 1.65% 2.09%
C 7135 5643 57 57 0.80% 1.01%
D 7135 5643 160 160 2.24% 2.84%

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 4210871 35291.01 597 583 119.3
A 10 83 48983 405.69 597 583 119.3
A 15 237 24022 196.46 597 583 119.3
B 5 172 544403 4466.49 638 621 121.7
B 4 232 109492 894.24 638 621 121.7
B 5 255 78240 637.54 638 621 121.7
C 15 214 262574 1814.71 625 630 144.3
C 0 10 187827 1296.87 625 630 144.3
C 0 207 64806 444.6 625 630 144.3
D 8 195 601827 3913.06 627 609 153.6
D 12 6 255239 1657.27 627 609 153.6
D 12 233 122089 790.66 627 609 153.6

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