ASTROSAT CZTI

Data Quality Report

Orbit 34381

Creation date: 2024-06-27T20:59:49.465115
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/AS1A05_085T01_9000004910_34381cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34381cztM0_level2_quad_clean.evt
Size (bytes)555,160,32060,433,920
Size529.4 MB 57.6 MB
Events in quadrant A2,388,140404,571
Events in quadrant B3,921,335377,647
Events in quadrant C3,213,351398,976
Events in quadrant D6,947,907293,605

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105013
B0149582
C0128982
D0241782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5057240.474590%
B505755811.034210%
C5057410.810757%
D5057141628.000791%

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 7090 5058 12 12 0.17% 0.24%
B 7090 5058 401 401 5.66% 7.93%
C 7090 5058 31 31 0.44% 0.61%
D 7090 5058 1332 1332 18.79% 26.33%

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 9 143 66750 563.82 585 574 117.4
A 10 83 32321 270.48 585 574 117.4
A 13 6 12093 98.14 585 574 117.4
B 5 172 1589737 14855.55 561 548 107.0
B 0 229 31356 287.99 561 548 107.0
B 5 255 30787 282.67 561 548 107.0
C 4 254 550393 4121.85 571 577 133.4
C 15 214 213486 1596.13 571 577 133.4
C 0 10 137834 1028.98 571 577 133.4
D 2 249 1961556 16436.03 491 478 119.3
D 7 223 1692491 14180.96 491 478 119.3
D 8 195 504551 4224.7 491 478 119.3

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