ASTROSAT CZTI

Data Quality Report

Orbit 17559

Creation date: 2024-06-27T17:37:57.904170
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/AS1T03_066T01_9000002600_17559cztM0_level2.evt modeM0/AS1T03_066T01_9000002600_17559cztM0_level2_quad_clean.evt
Size (bytes)298,163,52036,581,760
Size284.4 MB 34.9 MB
Events in quadrant A3,459,779210,280
Events in quadrant B1,738,285220,153
Events in quadrant C1,784,694211,098
Events in quadrant D1,799,738209,129

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126630
B073410
C074070
D076440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A362544012.137931%
B362670.193050%
C3626170.468836%
D3626240.661886%

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 3625 3625 357 357 9.85% 9.85%
B 3626 3626 1 1 0.03% 0.03%
C 3626 3626 7 7 0.19% 0.19%
D 3626 3626 18 18 0.50% 0.50%

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 14 237 1797169 20693.55 429 421 86.8
A 11 47 7487 81.38 429 421 86.8
A 0 226 3799 38.91 429 421 86.8
B 0 230 10928 125.09 439 429 83.9
B 12 111 9207 104.58 439 429 83.9
B 11 111 8269 93.41 439 429 83.9
C 14 238 67830 676.64 425 429 99.6
C 0 207 36775 364.88 425 429 99.6
C 3 233 21170 208.22 425 429 99.6
D 13 189 68704 642.06 435 423 106.3
D 10 70 60581 565.68 435 423 106.3
D 2 234 16946 155.37 435 423 106.3

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