ASTROSAT CZTI

Data Quality Report

Orbit 08241

Creation date: 2024-06-27T15:29:53.197480
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/AS1G07_086T01_9000001142_08241cztM0_level2.evt modeM0/AS1G07_086T01_9000001142_08241cztM0_level2_quad_clean.evt
Size (bytes)355,628,16069,586,560
Size339.2 MB 66.4 MB
Events in quadrant A2,583,676433,565
Events in quadrant B2,836,222436,396
Events in quadrant C2,493,197425,365
Events in quadrant D2,468,236412,711

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117132
B0124241
C0115751
D0116621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5707350.613282%
B5707540.946206%
C5707140.245313%
D5707170.297880%

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 6032 5708 2 2 0.03% 0.04%
B 6032 5707 12 12 0.20% 0.21%
C 6032 5708 0 0 0.00% 0.00%
D 6032 5708 6 6 0.10% 0.11%

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 15 24896 177.91 660 645 136.3
A 5 16 10169 69.87 660 645 136.3
A 0 226 6282 41.35 660 645 136.3
B 10 16 89540 688.58 664 648 129.1
B 11 51 71994 552.66 664 648 129.1
B 0 214 50632 387.19 664 648 129.1
C 13 61 5031 29.19 639 639 150.4
C 3 202 1650 6.72 639 639 150.4
C -1 -1 -1 -1.0 639 639 150.4
D 2 234 25594 147.27 633 614 169.6
D 13 105 15307 86.62 633 614 169.6
D 12 233 9860 54.51 633 614 169.6

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