ASTROSAT CZTI

Data Quality Report

Orbit 20240606_C09_006T01_9000006294_level2

Creation date: 2024-06-08T13:57:40.677984
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/AS1C09_006T01_9000006294cztM0_level2.fits modeM0/AS1C09_006T01_9000006294cztM0_level2_quad_clean.evt
Size (bytes)949,495,680963,204,480
Size905.5 MB 918.6 MB
Events in quadrant A5,843,0786,676,873
Events in quadrant B4,248,0922,785,172
Events in quadrant C5,932,0746,440,488
Events in quadrant D5,027,8345,597,389

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01590
B01590
C01590
D01590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022760
B022760
C022760
D022760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03931850
B06854200
C02523250
D03238660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11188142893.833537%
B1118826367156.909065%
C11188229852.667989%
D11188278407.007383%

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 127547 111875 0 0 0.00% 0.00%
B 127547 111744 0 0 0.00% 0.00%
C 127547 111664 0 0 0.00% 0.00%
D 127547 111772 0 0 0.00% 0.00%

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 7 110 4699 8.47 1523 1420 387.3
A 0 29 4475 7.89 1523 1420 387.3
A 14 95 4455 7.84 1523 1420 387.3
B 2 9 4028 13.43 1120 1064 220.7
B 2 8 3240 9.86 1120 1064 220.7
B 3 17 2929 8.45 1120 1064 220.7
C 3 202 4431 7.29 1567 1451 409.0
C 1 81 4426 7.27 1567 1451 409.0
C 3 203 4321 7.02 1567 1451 409.0
D 10 189 3679 5.91 1441 1302 401.9
D 4 12 3602 5.72 1441 1302 401.9
D 15 47 3588 5.69 1441 1302 401.9

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