ASTROSAT CZTI

Data Quality Report

Orbit 16100

Creation date: 2024-06-27T17:18:00.208428
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/AS1A04_209T01_9000002378_16100cztM0_level2.evt modeM0/AS1A04_209T01_9000002378_16100cztM0_level2_quad_clean.evt
Size (bytes)519,209,28093,787,200
Size495.2 MB 89.4 MB
Events in quadrant A4,032,546585,605
Events in quadrant B3,799,742601,996
Events in quadrant C3,752,005572,392
Events in quadrant D3,645,607573,276

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166843
B0161672
C0159612
D0159972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72772623.600385%
B72771582.171224%
C72772273.119417%
D72771111.525354%

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 7528 7279 179 179 2.38% 2.46%
B 7528 7278 14 14 0.19% 0.19%
C 7528 7278 37 37 0.49% 0.51%
D 7528 7278 35 35 0.46% 0.48%

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 15 174 614448 3440.33 868 847 178.4
A 15 239 55860 308.44 868 847 178.4
A 12 96 25118 136.08 868 847 178.4
B 0 189 184472 1064.39 880 859 172.5
B 7 220 61406 350.99 880 859 172.5
B 0 229 31315 176.55 880 859 172.5
C 9 236 183376 923.37 835 841 197.7
C 3 233 176433 888.25 835 841 197.7
C 14 238 126675 636.54 835 841 197.7
D 12 218 130812 615.55 854 829 211.2
D 7 38 107349 504.44 854 829 211.2
D 13 172 44743 207.96 854 829 211.2

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