ASTROSAT CZTI

Data Quality Report

Orbit 01828

Creation date: 2024-06-27T14:12:57.554368
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/AS1G02_021T08_9000000302_01828cztM0_level2.evt modeM0/AS1G02_021T08_9000000302_01828cztM0_level2_quad_clean.evt
Size (bytes)1,367,930,88071,187,840
Size1.3 GB 67.9 MB
Events in quadrant A9,434,290409,336
Events in quadrant B13,436,426411,813
Events in quadrant C9,035,339409,655
Events in quadrant D9,024,572399,734

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0333893
B0452332
C0321722
D0322392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7540550.729443%
B75404295.689655%
C7540710.941645%
D75401061.405836%

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 7675 7544 423 423 5.51% 5.61%
B 7675 7544 2563 2563 33.39% 33.97%
C 7675 7544 371 371 4.83% 4.92%
D 7675 7544 444 444 5.79% 5.89%

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 12 251 16436 23.42 2460 2477 596.0
A 10 2 9087 11.09 2460 2477 596.0
A 0 5 6657 7.01 2460 2477 596.0
B 8 3 3800007 6338.93 2533 2546 599.1
B 0 220 16721 23.66 2533 2546 599.1
B 0 229 10761 13.71 2533 2546 599.1
C 12 4 12599 15.67 2311 2393 651.3
C 7 159 6273 5.96 2311 2393 651.3
C -1 -1 -1 -1.0 2311 2393 651.3
D 7 85 185246 256.7 2279 2363 712.5
D 13 105 117282 161.3 2279 2363 712.5
D 14 3 87462 119.45 2279 2363 712.5

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