ASTROSAT CZTI

Data Quality Report

Orbit 18774

Creation date: 2024-06-27T17:55:00.104683
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/AS1A05_088T03_9000002808_18774cztM0_level2.evt modeM0/AS1A05_088T03_9000002808_18774cztM0_level2_quad_clean.evt
Size (bytes)507,355,20071,032,320
Size483.9 MB 67.7 MB
Events in quadrant A3,584,487427,295
Events in quadrant B3,703,607432,465
Events in quadrant C3,512,233419,682
Events in quadrant D4,121,135415,252

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145442
B0149982
C0141832
D0164102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65401301.987768%
B65401432.186544%
C65401392.125382%
D65401932.951070%

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 7805 6541 15 15 0.19% 0.23%
B 7805 6541 8 8 0.10% 0.12%
C 7805 6541 0 0 0.00% 0.00%
D 7805 6541 84 84 1.08% 1.28%

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 6 16 65396 358.99 903 888 179.7
A 15 192 22610 120.88 903 888 179.7
A 11 29 11778 60.6 903 888 179.7
B 7 220 113477 673.2 889 870 167.3
B 0 197 54316 319.52 889 870 167.3
B 6 36 22302 128.13 889 870 167.3
C 14 238 137112 691.48 860 869 197.0
C 3 233 11312 53.0 860 869 197.0
C 0 207 10774 50.27 860 869 197.0
D 14 34 675182 3149.26 881 855 214.1
D 1 52 75616 349.15 881 855 214.1
D 2 234 32467 147.64 881 855 214.1

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