ASTROSAT CZTI

Data Quality Report

Orbit 26744

Creation date: 2024-06-27T19:32:21.726773
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_223T01_9000003850_26744cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26744cztM0_level2_quad_clean.evt
Size (bytes)789,926,40092,692,800
Size753.3 MB 88.4 MB
Events in quadrant A3,177,232618,246
Events in quadrant B11,338,346526,916
Events in quadrant C4,065,658604,791
Events in quadrant D4,884,336584,502

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139520
B0382840
C0165570
D0192460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6770340.502216%
B6770332049.039882%
C67702984.401773%
D67703455.096012%

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 8530 6772 0 0 0.00% 0.00%
B 8530 6771 2915 2915 34.17% 43.05%
C 8530 6772 143 143 1.68% 2.11%
D 8530 6772 226 226 2.65% 3.34%

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 11 29 19481 113.23 816 799 165.0
A 0 13 11388 64.18 816 799 165.0
A 13 254 11337 63.87 816 799 165.0
B 0 189 8833306 73566.01 627 611 120.1
B 10 246 33869 277.0 627 611 120.1
B 12 111 14572 116.28 627 611 120.1
C 2 16 851559 4646.58 777 782 183.1
C 14 238 123612 670.84 777 782 183.1
C 15 208 33243 177.29 777 782 183.1
D 1 52 930099 4576.89 773 754 203.1
D 7 80 804080 3956.26 773 754 203.1
D 2 250 147695 723.66 773 754 203.1

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