ASTROSAT CZTI

Data Quality Report

Orbit 41198

Creation date: 2024-06-27T22:25:42.723957
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/AS1A12_101T02_9000005622_41198cztM0_level2.fits modeM0/AS1A12_101T02_9000005622_41198cztM0_level2_quad_clean.evt
Size (bytes)333,031,68088,617,600
Size317.6 MB 84.5 MB
Events in quadrant A2,817,426616,920
Events in quadrant B3,494,735586,430
Events in quadrant C3,018,426569,032
Events in quadrant D2,595,405550,363

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113593
B0138442
C0121262
D0113262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5152100.194099%
B51524799.297360%
C51522314.483696%
D5152400.776398%

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 7124 5153 2 2 0.03% 0.04%
B 7124 5153 420 420 5.90% 8.15%
C 7124 5153 234 234 3.28% 4.54%
D 7124 5153 29 29 0.41% 0.56%

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 498389 4149.98 587 576 120.0
A 2 79 23769 193.35 587 576 120.0
A 12 189 19675 159.22 587 576 120.0
B 5 255 1292795 12305.22 551 538 105.0
B 0 229 30398 284.33 551 538 105.0
B 12 111 13092 119.54 551 538 105.0
C 0 10 663924 5264.46 547 551 126.0
C 15 214 215866 1708.72 547 551 126.0
C 15 159 4787 33.62 547 551 126.0
D 13 249 158413 1169.17 564 548 135.0
D 2 249 149311 1101.76 564 548 135.0
D 12 217 76744 564.32 564 548 135.0

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