ASTROSAT CZTI

Data Quality Report

Orbit 18986

Creation date: 2024-06-27T17:57:36.451942
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/AS1A05_132T01_9000002828_18986cztM0_level2.evt modeM0/AS1A05_132T01_9000002828_18986cztM0_level2_quad_clean.evt
Size (bytes)557,328,960100,537,920
Size531.5 MB 95.9 MB
Events in quadrant A3,296,197655,971
Events in quadrant B3,664,388672,071
Events in quadrant C3,595,666649,121
Events in quadrant D5,881,539613,597

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139292
B0151113
C0145592
D0221142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6512440.675676%
B65111211.858393%
C6511580.890800%
D65114887.495008%

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 7597 6513 7 7 0.09% 0.11%
B 7596 6512 44 44 0.58% 0.68%
C 7596 6512 0 0 0.00% 0.00%
D 7596 6512 300 300 3.95% 4.61%

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 4 2 183402 1113.69 805 790 164.0
A 13 254 7432 40.51 805 790 164.0
A 0 226 6988 37.8 805 790 164.0
B 3 112 405562 2605.42 808 789 155.4
B 7 220 62861 399.54 808 789 155.4
B 12 111 18304 112.74 808 789 155.4
C 3 233 202986 1095.42 783 790 184.6
C 8 208 147940 797.21 783 790 184.6
C 14 238 121253 652.63 783 790 184.6
D 7 238 2360662 12725.36 764 744 185.5
D 1 52 293052 1576.21 764 744 185.5
D 12 218 231837 1246.12 764 744 185.5

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