ASTROSAT CZTI

Data Quality Report

Orbit 34832

Creation date: 2022-03-08T15:38:46.097265
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_34832cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34832cztM0_level2_quad_clean.evt
Size (bytes)807,094,08084,876,480
Size769.7 MB 80.9 MB
Events in quadrant A2,822,463645,094
Events in quadrant B13,247,533278,890
Events in quadrant C3,095,741649,469
Events in quadrant D4,888,742592,870

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120413
B0431942
C0125602
D0185192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5750260.452174%
B5750490385.269565%
C5750711.234783%
D57504567.930435%

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 7152 5751 10 10 0.14% 0.17%
B 7152 5750 4834 4834 67.59% 84.07%
C 7152 5751 59 59 0.82% 1.03%
D 7152 5751 415 415 5.80% 7.22%

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 67407 507.31 657 645 131.6
A 10 83 54019 405.58 657 645 131.6
A 2 79 51462 386.15 657 645 131.6
B 5 14 3821509 63955.13 305 298 59.7
B 5 31 3791346 63450.29 305 298 59.7
B 5 15 3781253 63281.37 305 298 59.7
C 15 214 268111 1807.84 638 642 147.9
C 0 10 187651 1264.01 638 642 147.9
C 0 207 89980 603.84 638 642 147.9
D 8 195 786510 5138.98 623 605 152.9
D 12 233 734053 4795.97 623 605 152.9
D 13 249 217657 1419.29 623 605 152.9

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