ASTROSAT CZTI

Data Quality Report

Orbit 20220330_A11_069T05_9000005038_level2

Creation date: 2022-04-02T15:28:11.613434
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/AS1A11_069T05_9000005038cztM0_level2_bc.evt modeM0/AS1A11_069T05_9000005038cztM0_level2_quad_clean.evt
Size (bytes)1,642,671,360357,641,280
Size1.5 GB 341.1 MB
Events in quadrant A5,920,0182,488,845
Events in quadrant B13,637,6162,256,691
Events in quadrant C7,577,1432,400,857
Events in quadrant D21,036,3332,088,432

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0503820
B0895640
C0549370
D01026660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231931100.474281%
B23193427218.419351%
C231933611.556504%
D23193354915.302031%

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 32339 23197 7 7 0.02% 0.03%
B 32339 23193 274 274 0.85% 1.18%
C 32339 23193 37 37 0.11% 0.16%
D 32339 23192 1330 1330 4.11% 5.73%

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 290875 993.83 1351 1334 291.3
A 9 143 170830 581.78 1351 1334 291.3
A 15 237 114453 388.27 1351 1334 291.3
B 5 236 7307852 30566.86 1235 1215 239.0
B 5 172 958831 4006.13 1235 1215 239.0
B 0 182 207981 864.99 1235 1215 239.0
C 15 214 918501 3197.04 1278 1273 286.9
C 0 207 804846 2800.89 1278 1273 286.9
C 0 10 490049 1703.65 1278 1273 286.9
D 8 195 7664355 26733.58 1227 1194 286.6
D 7 80 5355210 18677.93 1227 1194 286.6
D 2 250 726822 2531.41 1227 1194 286.6

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