ASTROSAT CZTI

Data Quality Report

Orbit 41173

Creation date: 2024-06-27T22:25:30.338126
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_101T04_9000005610_41173cztM0_level2.fits modeM0/AS1A12_101T04_9000005610_41173cztM0_level2_quad_clean.evt
Size (bytes)540,204,48079,937,280
Size515.2 MB 76.2 MB
Events in quadrant A2,920,152600,262
Events in quadrant B4,568,172554,495
Events in quadrant C8,596,052374,066
Events in quadrant D3,497,482517,625

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117053
B0172062
C0292202
D0140922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5340160.299625%
B534063311.853933%
C5340222241.610487%
D53402354.400749%

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 7283 5341 3 3 0.04% 0.06%
B 7283 5341 538 538 7.39% 10.07%
C 7282 5339 1905 1905 26.16% 35.68%
D 7282 5340 203 203 2.79% 3.80%

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 546581 4448.58 599 587 122.7
A 12 189 43662 350.96 599 587 122.7
A 13 254 9272 70.76 599 587 122.7
B 0 186 1038960 9468.0 562 547 109.7
B 0 245 949524 8652.54 562 547 109.7
B 0 229 207837 1890.02 562 547 109.7
C 9 54 6129409 52805.51 497 500 116.1
C 0 10 298643 2568.74 497 500 116.1
C 15 214 201127 1728.56 497 500 116.1
D 13 249 827502 5820.55 572 555 142.1
D 2 249 231037 1622.27 572 555 142.1
D 12 233 180430 1266.07 572 555 142.1

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