ASTROSAT CZTI

Data Quality Report

Orbit 20230726_A12_102T01_9000005794_level2

Creation date: 2023-07-28T13:31:49.225709
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/AS1A12_102T01_9000005794cztM0_level2.fits modeM0/AS1A12_102T01_9000005794cztM0_level2_quad_clean.evt
Size (bytes)310,668,480403,727,040
Size296.3 MB 385.0 MB
Events in quadrant A1,871,5242,597,005
Events in quadrant B1,785,2882,563,693
Events in quadrant C1,840,7562,476,181
Events in quadrant D1,582,1902,262,030

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01590
D01590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06980
B06980
C06980
D06980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0754680
B0708440
C0687020
D0828140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A338851350.398406%
B338851850.545964%
C33885320.094437%
D338859382.768187%

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 73047 33884 0 0 0.00% 0.00%
B 73047 33885 0 0 0.00% 0.00%
C 73047 33885 0 0 0.00% 0.00%
D 73047 33873 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 9 19 1596 9.21 488 460 123.4
A 7 110 1560 8.92 488 460 123.4
A 0 29 1481 8.28 488 460 123.4
B 2 9 1505 11.55 472 452 91.2
B 3 80 1287 9.16 472 452 91.2
B 3 17 1259 8.85 472 452 91.2
C 3 203 1516 8.51 486 458 124.3
C 3 202 1514 8.5 486 458 124.3
C 1 81 1489 8.3 486 458 124.3
D 7 3 1242 6.8 452 413 121.9
D 10 189 1227 6.68 452 413 121.9
D 10 113 1182 6.31 452 413 121.9

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