ASTROSAT CZTI

Data Quality Report

Orbit 33905

Creation date: 2024-06-27T20:53:59.724960
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/AS1T04_090T01_9000004840_33905cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33905cztM0_level2_quad_clean.evt
Size (bytes)765,766,08056,445,120
Size730.3 MB 53.8 MB
Events in quadrant A9,135,232194,951
Events in quadrant B3,747,990381,162
Events in quadrant C3,311,015386,108
Events in quadrant D6,625,632360,258

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306733
B0147102
C0129862
D0235212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5508263047.748729%
B55083295.973130%
C55081332.414670%
D550897217.647059%

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 7000 5507 2293 2293 32.76% 41.64%
B 7000 5509 221 221 3.16% 4.01%
C 7000 5509 85 85 1.21% 1.54%
D 7000 5509 880 880 12.57% 15.97%

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 7298020 77944.64 468 459 93.6
A 10 83 11545 118.41 468 459 93.6
A 13 6 8040 80.97 468 459 93.6
B 5 172 1103515 9193.58 621 605 120.0
B 4 81 70360 581.46 621 605 120.0
B 4 170 27714 225.97 621 605 120.0
C 0 10 343532 2402.19 616 620 142.7
C 15 214 238296 1664.99 616 620 142.7
C 3 233 204994 1431.7 616 620 142.7
D 1 52 2533248 15906.04 584 573 159.2
D 8 195 502667 3153.32 584 573 159.2
D 12 233 483599 3033.56 584 573 159.2

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