ASTROSAT CZTI

Data Quality Report

Orbit 47651

Creation date: 2024-07-20T21:18:02.474916
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/AS1A13_071T01_9000006340_47651cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47651cztM0_level2_quad_clean.evt
Size (bytes)434,554,560103,170,240
Size414.4 MB 98.4 MB
Events in quadrant A6,874,399677,183
Events in quadrant B2,940,735708,869
Events in quadrant C2,792,801674,049
Events in quadrant D2,992,756627,537

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249201
B0131521
C0130201
D0135101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62462764.418828%
B6246340.544348%
C6247150.240115%
D6247300.480231%

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 7292 6248 92 92 1.26% 1.47%
B 7292 6248 6 6 0.08% 0.10%
C 7293 6249 7 7 0.10% 0.11%
D 7293 6249 17 17 0.23% 0.27%

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 10 83 3610290 24669.03 696 681 146.3
A 9 191 371006 2530.9 696 681 146.3
A 13 248 140720 957.06 696 681 146.3
B 5 172 73806 537.81 696 675 136.0
B 5 255 60139 437.3 696 675 136.0
B 0 190 32253 232.23 696 675 136.0
C 14 254 127429 789.79 679 682 160.5
C 3 233 8145 46.5 679 682 160.5
C 12 250 7194 40.58 679 682 160.5
D 2 249 147474 851.53 687 664 172.4
D 6 239 59950 343.87 687 664 172.4
D 10 181 39964 227.95 687 664 172.4

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