ASTROSAT CZTI

Data Quality Report

Orbit 39794

Creation date: 2024-06-27T22:09:05.026615
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_022T01_9000005498_39794cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39794cztM0_level2_quad_clean.evt
Size (bytes)584,830,08086,613,120
Size557.7 MB 82.6 MB
Events in quadrant A4,141,609664,257
Events in quadrant B3,249,689684,120
Events in quadrant C10,044,535307,002
Events in quadrant D3,796,357591,618

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198944115
B0162303256
C0430389556
D0190554331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04111
B04416
C04213
D04316

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014533
B014432
C014539
D014331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53953406.302132%
B53971653.057254%
C5288303457.375189%
D53691783.315329%

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 16486 5487 262 262 1.59% 4.77%
B 16481 5507 107 107 0.65% 1.94%
C 16479 5392 2488 2488 15.10% 46.14%
D 16488 5470 150 150 0.91% 2.74%

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 13 248 776256 6060.28 639 627 128.0
A 10 83 463636 3617.66 639 627 128.0
A 9 143 338915 2643.17 639 627 128.0
B 5 255 560873 4694.73 630 613 119.3
B 4 171 94709 788.48 630 613 119.3
B 0 186 42256 348.95 630 613 119.3
C 9 187 7350925 67980.7 467 469 108.1
C 15 208 658368 6084.58 467 469 108.1
C 15 214 175804 1621.59 467 469 108.1
D 13 249 452433 3023.77 618 603 149.4
D 12 227 429720 2871.77 618 603 149.4
D 2 249 209237 1396.23 618 603 149.4

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