ASTROSAT CZTI

Data Quality Report

Orbit 41908

Creation date: 2024-06-27T22:34:15.468290
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_099T01_9000005716_41908cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41908cztM0_level2_quad_clean.evt
Size (bytes)661,371,84073,074,240
Size630.7 MB 69.7 MB
Events in quadrant A4,008,696607,237
Events in quadrant B2,561,050655,774
Events in quadrant C3,240,768586,164
Events in quadrant D14,272,5043,753

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152272
B0109113
C0124042
D0454162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51312134.151238%
B5130240.467836%
C51302715.282651%
D5130510399.473684%

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 5132 157 157 2.20% 3.06%
B 7133 5130 8 8 0.11% 0.16%
C 7133 5131 265 265 3.72% 5.16%
D 7133 5131 4782 4782 67.04% 93.20%

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 14 24 761259 6393.45 584 573 119.0
A 10 83 510556 4286.33 584 573 119.0
A 15 223 473776 3977.2 584 573 119.0
B 5 255 197521 1742.4 595 581 113.0
B 0 245 21393 184.13 595 581 113.0
B 12 111 14309 121.46 595 581 113.0
C 0 10 787559 5986.59 571 575 131.5
C 15 214 201984 1532.12 571 575 131.5
C 0 15 24678 183.35 571 575 131.5
D 12 79 13510676 432945.44 125 121 31.2
D 13 249 147184 4712.63 125 121 31.2
D 2 249 37411 1194.96 125 121 31.2

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