ASTROSAT CZTI

Data Quality Report

Orbit 00247

Creation date: 2024-06-27T13:58:23.771335
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/AS1P01_122T01_9000000026_00247cztM0_level2.evt modeM0/AS1P01_122T01_9000000026_00247cztM0_level2_quad_clean.evt
Size (bytes)863,881,92069,750,720
Size823.9 MB 66.5 MB
Events in quadrant A6,741,295432,602
Events in quadrant B6,637,829440,393
Events in quadrant C6,057,643426,011
Events in quadrant D6,343,970411,833

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241152
B0238081
C0220951
D0229471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5740130.226481%
B574010.017422%
C574040.069686%
D5740320.557491%

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 7445 5741 147 147 1.97% 2.56%
B 7445 5741 73 73 0.98% 1.27%
C 7445 5741 49 49 0.66% 0.85%
D 7445 5741 187 187 2.51% 3.26%

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 15 250 195269 529.86 1658 1653 365.4
A 15 127 59361 157.93 1658 1653 365.4
A 13 17 32618 84.74 1658 1653 365.4
B 0 214 119123 298.39 1689 1699 393.5
B 5 46 22546 52.97 1689 1699 393.5
B 2 32 14917 33.59 1689 1699 393.5
C 9 68 51524 117.94 1518 1571 423.6
C 1 1 37153 84.01 1518 1571 423.6
C 9 54 6696 12.1 1518 1571 423.6
D 1 4 679074 1508.4 1423 1476 449.2
D 1 5 92315 202.22 1423 1476 449.2
D 10 154 80701 176.36 1423 1476 449.2

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