ASTROSAT CZTI

Data Quality Report

Orbit 07789

Creation date: 2024-06-27T15:24:02.421152
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/AS1A02_132T01_9000001072_07789cztM0_level2.evt modeM0/AS1A02_132T01_9000001072_07789cztM0_level2_quad_clean.evt
Size (bytes)431,907,84081,354,240
Size411.9 MB 77.6 MB
Events in quadrant A2,917,612510,137
Events in quadrant B3,094,324522,865
Events in quadrant C2,883,607515,235
Events in quadrant D3,761,366480,486

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127572
B0131041
C0127331
D0151961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6231721.155513%
B6231731.171562%
C6231380.609854%
D62311412.262879%

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 7141 6231 1 1 0.01% 0.02%
B 7141 6231 3 3 0.04% 0.05%
C 7141 6231 0 0 0.00% 0.00%
D 7141 6231 61 61 0.85% 0.98%

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 11826 71.67 754 738 154.7
A 0 226 7232 41.98 754 738 154.7
A 12 194 6529 37.43 754 738 154.7
B 4 81 61477 418.02 756 738 145.3
B 0 214 22472 149.58 756 738 145.3
B 0 219 21691 144.2 756 738 145.3
C 1 16 10321 56.18 735 737 170.6
C 13 61 5540 28.15 735 737 170.6
C 12 4 3352 15.33 735 737 170.6
D 1 52 456506 2546.58 732 710 179.0
D 13 137 282689 1575.45 732 710 179.0
D 2 152 184403 1026.31 732 710 179.0

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