ASTROSAT CZTI

Data Quality Report

Orbit 15724

Creation date: 2024-06-27T17:12:36.604820
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/AS1A04_198T01_9000002322_15724cztM0_level2.evt modeM0/AS1A04_198T01_9000002322_15724cztM0_level2_quad_clean.evt
Size (bytes)415,756,80085,245,120
Size396.5 MB 81.3 MB
Events in quadrant A2,927,205536,510
Events in quadrant B2,927,947546,965
Events in quadrant C3,161,041532,363
Events in quadrant D3,149,484529,077

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130441
B0129141
C0137361
D0136991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62461472.353506%
B62461412.257445%
C62461432.289465%
D62461322.113353%

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 6587 6248 14 14 0.21% 0.22%
B 6587 6248 0 0 0.00% 0.00%
C 6587 6248 0 0 0.00% 0.00%
D 6587 6248 38 38 0.58% 0.61%

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 9 143 97577 647.12 735 717 149.7
A 0 226 6548 38.96 735 717 149.7
A 12 194 5469 31.75 735 717 149.7
B 4 173 29195 199.95 735 714 142.4
B 12 111 16716 112.34 735 714 142.4
B 11 111 14478 96.63 735 714 142.4
C 3 233 219270 1311.94 713 717 166.6
C 14 238 108248 645.49 713 717 166.6
C 9 54 44601 263.43 713 717 166.6
D 1 52 201266 1138.91 723 704 176.1
D 12 110 186216 1053.45 723 704 176.1
D 2 234 26339 145.57 723 704 176.1

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