ASTROSAT CZTI

Data Quality Report

Orbit 27168

Creation date: 2024-06-27T19:37:12.861265
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_245T01_9000003916_27168cztM0_level2.evt modeM0/AS1T03_245T01_9000003916_27168cztM0_level2_quad_clean.evt
Size (bytes)478,756,80088,836,480
Size456.6 MB 84.7 MB
Events in quadrant A3,121,036596,851
Events in quadrant B3,382,961600,426
Events in quadrant C2,979,811559,533
Events in quadrant D4,619,295525,421

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129390
B0138230
C0124420
D0175520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5832721.234568%
B5833981.680096%
C58331011.731528%
D58334427.577576%

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 7142 5833 4 4 0.06% 0.07%
B 7143 5834 11 11 0.15% 0.19%
C 7143 5834 0 0 0.00% 0.00%
D 7143 5834 362 362 5.07% 6.21%

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 59849 375.66 784 772 157.3
A 6 16 19451 118.78 784 772 157.3
A 13 254 9595 56.1 784 772 157.3
B 15 33 220187 1513.09 775 760 145.0
B 5 172 50908 345.8 775 760 145.0
B 0 190 28556 191.67 775 760 145.0
C 14 238 117676 687.42 730 737 170.1
C 15 208 15279 85.48 730 737 170.1
C 13 61 5090 25.59 730 737 170.1
D 1 52 1450900 7836.13 718 704 185.1
D 2 250 273500 1474.05 718 704 185.1
D 12 233 89398 479.26 718 704 185.1

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