ASTROSAT CZTI

Data Quality Report

Orbit 34842

Creation date: 2022-03-09T07:20:28.256427
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_34842cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34842cztM0_level2_quad_clean.evt
Size (bytes)696,329,28074,315,520
Size664.1 MB 70.9 MB
Events in quadrant A10,423,822362,928
Events in quadrant B3,996,353516,919
Events in quadrant C2,996,073527,196
Events in quadrant D3,336,870494,266

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343402
B0151011
C0115621
D0134001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4958399580.576846%
B49584118.289633%
C49581402.823719%
D49581312.642194%

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 7050 4958 3401 3401 48.24% 68.60%
B 7050 4958 330 330 4.68% 6.66%
C 7050 4959 102 102 1.45% 2.06%
D 7050 4959 83 83 1.18% 1.67%

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 8652676 98239.27 446 439 88.1
A 10 83 32171 360.29 446 439 88.1
A 13 6 8760 94.48 446 439 88.1
B 5 172 603937 5470.09 600 587 110.3
B 5 255 264374 2391.55 600 587 110.3
B 5 31 200271 1810.38 600 587 110.3
C 0 10 339298 2469.31 608 614 137.2
C 15 214 226333 1645.7 608 614 137.2
C 0 207 18532 130.64 608 614 137.2
D 8 195 470942 3232.97 603 588 145.5
D 13 249 189308 1297.16 603 588 145.5
D 12 233 123245 843.08 603 588 145.5

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