ASTROSAT CZTI

Data Quality Report

Orbit 41202

Creation date: 2024-06-27T22:25:46.309450
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_101T02_9000005622_41202cztM0_level2.fits modeM0/AS1A12_101T02_9000005622_41202cztM0_level2_quad_clean.evt
Size (bytes)191,934,72056,517,120
Size183.0 MB 53.9 MB
Events in quadrant A1,662,304383,180
Events in quadrant B1,751,613387,689
Events in quadrant C1,537,298366,421
Events in quadrant D1,889,055334,782

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069910
B076760
C067780
D081240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A337430.088915%
B3374411.215175%
C337400.000000%
D3374862.548903%

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 3374 3374 1 1 0.03% 0.03%
B 3374 3374 30 30 0.89% 0.89%
C 3374 3374 0 0 0.00% 0.00%
D 3374 3374 82 82 2.43% 2.43%

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 245174 3295.66 359 352 74.3
A 13 6 7318 93.77 359 352 74.3
A 13 252 6482 82.52 359 352 74.3
B 5 255 297878 4317.58 353 344 68.9
B 4 170 36541 525.26 353 344 68.9
B 0 229 19890 283.64 353 344 68.9
C 15 214 142701 1732.1 351 353 82.2
C 0 10 22184 265.64 351 353 82.2
C 2 16 3397 37.04 351 353 82.2
D 12 16 232703 2729.79 349 340 85.1
D 13 249 158890 1862.64 349 340 85.1
D 2 249 80590 942.77 349 340 85.1

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