ASTROSAT CZTI

Data Quality Report

Orbit 09287

Creation date: 2024-06-27T15:43:58.054171
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_077T02_9000001308_09287cztM0_level2.evt modeM0/AS1G07_077T02_9000001308_09287cztM0_level2_quad_clean.evt
Size (bytes)477,815,04099,095,040
Size455.7 MB 94.5 MB
Events in quadrant A4,033,455633,653
Events in quadrant B3,379,997647,915
Events in quadrant C2,994,854646,777
Events in quadrant D3,616,034614,588

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016669288
B014802203
C013528127
D015662327

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01364
C01360
D01362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65461021.558203%
B6574761.156069%
C6592380.576456%
D65501081.648855%

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 7585 6644 11 11 0.15% 0.17%
B 7585 6650 13 13 0.17% 0.20%
C 7585 6653 0 0 0.00% 0.00%
D 7585 6639 37 37 0.49% 0.56%

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 5 792373 5037.23 772 757 157.2
A 15 239 107551 679.55 772 757 157.2
A 1 162 81242 512.14 772 757 157.2
B 0 214 140335 942.87 775 756 148.0
B 8 234 77016 515.14 775 756 148.0
B 0 219 58311 388.79 775 756 148.0
C 14 67 7667 38.77 763 767 178.0
C 13 61 5846 28.54 763 767 178.0
C 5 238 5320 25.58 763 767 178.0
D 1 52 288827 1509.44 755 736 190.9
D 12 233 249960 1305.8 755 736 190.9
D 7 71 106788 555.65 755 736 190.9

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