ASTROSAT CZTI

Data Quality Report

Orbit 21583

Creation date: 2024-06-27T18:29:51.325990
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/AS1A06_002T02_9000003204_21583cztM0_level2.evt modeM0/AS1A06_002T02_9000003204_21583cztM0_level2_quad_clean.evt
Size (bytes)556,200,00078,791,040
Size530.4 MB 75.1 MB
Events in quadrant A7,350,996417,490
Events in quadrant B3,012,093539,398
Events in quadrant C2,887,489515,649
Events in quadrant D3,195,174502,313

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256610
B0125410
C0122140
D0134760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5879200634.121449%
B5880741.258503%
C5880851.445578%
D5880871.479592%

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 7119 5880 1653 1653 23.22% 28.11%
B 7120 5881 1 1 0.01% 0.02%
C 7120 5881 0 0 0.00% 0.00%
D 7120 5881 37 37 0.52% 0.63%

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 15 236 5015578 41320.17 606 596 121.4
A 13 254 6313 47.1 606 596 121.4
A 0 226 5294 38.71 606 596 121.4
B 0 228 27613 194.07 739 724 138.6
B 0 230 26282 184.46 739 724 138.6
B 0 190 25565 179.29 739 724 138.6
C 14 238 113522 676.43 710 713 166.8
C 13 61 4970 25.53 710 713 166.8
C 4 223 4724 24.05 710 713 166.8
D 1 52 201899 1165.43 718 699 172.6
D 2 136 136216 784.97 718 699 172.6
D 7 38 40268 229.2 718 699 172.6

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