ASTROSAT CZTI

Data Quality Report

Orbit 30516

Creation date: 2024-06-27T20:16:19.639138
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/AS1C05_019T04_9000004388_30516cztM0_level2.evt modeM0/AS1C05_019T04_9000004388_30516cztM0_level2_quad_clean.evt
Size (bytes)565,200,000114,624,000
Size539.0 MB 109.3 MB
Events in quadrant A3,234,460769,374
Events in quadrant B5,624,368759,861
Events in quadrant C3,441,240746,930
Events in quadrant D4,356,656721,620

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141342
B0215902
C0144732
D0174292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6796560.824014%
B67961812.663331%
C67961792.633902%
D67962513.693349%

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 7611 6797 3 3 0.04% 0.04%
B 7611 6797 16 16 0.21% 0.24%
C 7611 6797 4 4 0.05% 0.06%
D 7611 6797 172 172 2.26% 2.53%

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 8 192 23683 137.07 829 812 166.9
A 13 254 12534 70.25 829 812 166.9
A 3 137 7801 41.89 829 812 166.9
B 6 159 2068948 13454.07 820 799 153.7
B 0 229 98412 635.01 820 799 153.7
B 0 155 76271 490.97 820 799 153.7
C 14 238 133846 715.37 802 806 186.0
C 0 10 68452 363.74 802 806 186.0
C 10 22 47580 251.51 802 806 186.0
D 8 195 469721 2491.0 800 779 188.3
D 12 218 351491 1862.97 800 779 188.3
D 13 249 219758 1163.21 800 779 188.3

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