ASTROSAT CZTI

Data Quality Report

Orbit 05661

Creation date: 2024-06-27T14:57:45.253127
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/AS1A02_077T01_9000000732_05661cztM0_level2.evt modeM0/AS1A02_077T01_9000000732_05661cztM0_level2_quad_clean.evt
Size (bytes)858,905,280140,477,760
Size819.1 MB 134.0 MB
Events in quadrant A5,687,941879,962
Events in quadrant B7,197,260854,006
Events in quadrant C5,794,992868,494
Events in quadrant D6,540,088842,532

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247563
B0290702
C0254262
D0274072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116892141.830781%
B116894864.157755%
C116891721.471469%
D116892752.352639%

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 13819 11691 16 16 0.12% 0.14%
B 13819 11691 308 308 2.23% 2.63%
C 13819 11691 72 72 0.52% 0.62%
D 13819 11691 130 130 0.94% 1.11%

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 0 50 143763 493.69 1413 1382 288.4
A 14 250 41756 139.99 1413 1382 288.4
A 13 6 33336 110.8 1413 1382 288.4
B 10 245 594374 2234.02 1397 1367 265.4
B 10 16 315788 1184.51 1397 1367 265.4
B 5 172 179216 670.0 1397 1367 265.4
C 5 250 318814 1020.72 1347 1353 311.0
C 1 16 154685 493.0 1347 1353 311.0
C 5 233 43463 135.4 1347 1353 311.0
D 12 233 389548 1166.21 1356 1314 332.9
D 4 95 336538 1006.97 1356 1314 332.9
D 2 152 303474 907.65 1356 1314 332.9

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