ASTROSAT CZTI

Data Quality Report

Orbit 00772

Creation date: 2024-06-27T14:02:44.904320
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/AS1P01_010T01_9000000108_00772cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00772cztM0_level2_quad_clean.evt
Size (bytes)1,250,481,600107,170,560
Size1.2 GB 102.2 MB
Events in quadrant A9,135,297691,898
Events in quadrant B9,929,279696,738
Events in quadrant C9,183,189683,449
Events in quadrant D9,142,696667,429

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323110
B0346480
C0324380
D0323130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7272851.168867%
B72701682.310867%
C72741181.622216%
D72751401.924399%

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 7272 7272 449 449 6.17% 6.17%
B 7273 7272 677 677 9.31% 9.31%
C 7418 7277 576 576 7.76% 7.92%
D 7275 7275 596 596 8.19% 8.19%

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 8 192 119913 207.6 2316 2330 566.4
A 12 236 104701 180.75 2316 2330 566.4
A 0 117 13387 19.52 2316 2330 566.4
B 5 249 352356 613.68 2414 2415 570.2
B 7 221 187858 325.2 2414 2415 570.2
B 0 220 164106 283.55 2414 2415 570.2
C 10 17 343395 544.72 2217 2296 626.2
C 15 241 55219 84.52 2217 2296 626.2
C 3 111 42290 63.87 2217 2296 626.2
D 6 226 465911 694.66 2137 2208 667.5
D 12 33 264616 393.11 2137 2208 667.5
D 13 25 119705 176.02 2137 2208 667.5

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