ASTROSAT CZTI

Data Quality Report

Orbit 38982

Creation date: 2024-06-27T21:58:56.242155
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_057T01_9000005418_38982cztM0_level2.fits modeM0/AS1A12_057T01_9000005418_38982cztM0_level2_quad_clean.evt
Size (bytes)423,832,32099,048,960
Size404.2 MB 94.5 MB
Events in quadrant A2,965,079694,528
Events in quadrant B2,848,739701,427
Events in quadrant C2,766,026672,272
Events in quadrant D6,708,474569,671

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121153
B0118382
C0115112
D0235772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5163220.426109%
B5163721.394538%
C516390.174317%
D516358211.272516%

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 7166 5164 9 9 0.13% 0.17%
B 7166 5164 47 47 0.66% 0.91%
C 7166 5164 0 0 0.00% 0.00%
D 7166 5164 609 609 8.50% 11.79%

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 433883 3390.39 637 627 127.8
A 13 248 27590 211.0 637 627 127.8
A 9 143 21070 159.97 637 627 127.8
B 5 172 305604 2537.46 632 615 120.2
B 15 32 16820 134.82 632 615 120.2
B 0 230 16192 129.6 632 615 120.2
C 15 214 225536 1566.08 627 631 143.6
C 3 233 79459 548.9 627 631 143.6
C 1 128 7697 49.2 627 631 143.6
D 12 235 2922620 19973.52 602 586 146.3
D 12 227 1179842 8060.79 602 586 146.3
D 13 249 99055 673.08 602 586 146.3

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