ASTROSAT CZTI

Data Quality Report

Orbit 47970

Creation date: 2024-08-11T09:55:17.352438
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/AS1A13_062T02_9000006384_47970cztM0_level2.fits modeM0/AS1A13_062T02_9000006384_47970cztM0_level2_quad_clean.evt
Size (bytes)487,440,000110,128,320
Size464.9 MB 105.0 MB
Events in quadrant A7,207,476708,449
Events in quadrant B3,032,300772,725
Events in quadrant C3,449,329726,156
Events in quadrant D3,838,032663,233

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259403
B0137722
C0150622
D0163272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66534186.282880%
B6654530.796513%
C66541542.314397%
D66541652.479711%

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 7673 6653 69 69 0.90% 1.04%
B 7674 6654 0 0 0.00% 0.00%
C 7674 6654 96 96 1.25% 1.44%
D 7674 6655 134 134 1.75% 2.01%

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 10 83 3993837 25866.74 739 724 154.4
A 0 31 350985 2268.93 739 724 154.4
A 3 137 8589 50.94 739 724 154.4
B 12 111 18862 120.09 759 735 150.9
B 11 111 17798 113.04 759 735 150.9
B 14 111 16720 105.9 759 735 150.9
C 14 254 460368 2598.88 748 752 176.9
C 12 2 36803 203.85 748 752 176.9
C 1 3 27644 152.06 748 752 176.9
D 2 37 339864 1814.32 745 723 186.9
D 11 224 265032 1413.99 745 723 186.9
D 2 249 262701 1401.52 745 723 186.9

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