ASTROSAT CZTI

Data Quality Report

Orbit 02487

Creation date: 2024-06-27T14:18:33.273941
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/AS1T01_046T01_9000000372_02487cztM0_level2.fits modeM0/AS1T01_046T01_9000000372_02487cztM0_level2_quad_clean.evt
Size (bytes)333,169,920110,946,240
Size317.7 MB 105.8 MB
Events in quadrant A2,875,642736,276
Events in quadrant B2,984,168763,292
Events in quadrant C2,936,722726,863
Events in quadrant D3,016,781667,926

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135523
B0137322
C0137572
D0142622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6664110.165066%
B6664170.255102%
C6664160.240096%
D6664420.630252%

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 7819 6665 0 0 0.00% 0.00%
B 7819 6665 2 2 0.03% 0.03%
C 7819 6665 4 4 0.05% 0.06%
D 7819 6665 41 41 0.52% 0.62%

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 21126 135.68 739 723 150.4
A 14 63 13643 85.92 739 723 150.4
A 12 194 8324 50.55 739 723 150.4
B 0 87 28924 194.6 756 737 144.8
B 5 6 23244 155.38 756 737 144.8
B 4 200 17034 112.51 756 737 144.8
C 12 4 81436 480.11 722 725 168.1
C 10 65 20281 116.33 722 725 168.1
C 13 61 6568 34.76 722 725 168.1
D 2 184 116973 698.43 704 686 166.5
D 10 199 80121 477.09 704 686 166.5
D 1 31 53778 318.87 704 686 166.5

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