ASTROSAT CZTI

Data Quality Report

Orbit 35594

Creation date: 2022-04-29T02:14:55.843412
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/AS1A10_065T04_9000005098_35594cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35594cztM0_level2_quad_clean.evt
Size (bytes)513,760,32058,207,680
Size490.0 MB 55.5 MB
Events in quadrant A4,455,106331,890
Events in quadrant B3,066,156391,811
Events in quadrant C3,302,076368,405
Events in quadrant D4,403,996325,977

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164143
B0121302
C0127902
D0162892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A490273114.912281%
B49022034.141167%
C49022364.814361%
D490257911.811506%

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 6934 4903 652 652 9.40% 13.30%
B 6934 4903 152 152 2.19% 3.10%
C 6934 4903 163 163 2.35% 3.32%
D 6934 4903 498 498 7.18% 10.16%

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 2184320 19674.69 550 539 111.0
A 10 83 129713 1163.79 550 539 111.0
A 13 6 8760 74.07 550 539 111.0
B 5 172 428276 3828.78 588 572 111.7
B 0 182 221027 1973.5 588 572 111.7
B 0 190 32681 287.44 588 572 111.7
C 0 10 803935 6098.03 567 572 131.7
C 15 214 198991 1506.13 567 572 131.7
C 15 159 64676 486.59 567 572 131.7
D 7 80 1561059 11794.84 543 529 132.3
D 10 118 160566 1209.6 543 529 132.3
D 1 52 155089 1168.2 543 529 132.3

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