ASTROSAT CZTI

Data Quality Report

Orbit 30257

Creation date: 2024-06-27T20:12:47.690596
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/AS1A10_007T01_9000004350_30257cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30257cztM0_level2_quad_clean.evt
Size (bytes)938,315,52075,787,200
Size894.8 MB 72.3 MB
Events in quadrant A3,578,208527,413
Events in quadrant B16,418,903226,047
Events in quadrant C3,622,836522,194
Events in quadrant D4,315,444521,773

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150921
B0535721
C0151071
D0172412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71192423.399354%
B7120670394.143258%
C71203715.210674%
D71192213.104369%

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 7164 7120 2 2 0.03% 0.03%
B 7164 7119 5765 5765 80.47% 80.98%
C 7165 7121 0 0 0.00% 0.00%
D 7164 7120 64 64 0.89% 0.90%

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 14 239 152608 844.64 886 866 179.7
A 13 254 12900 66.98 886 866 179.7
A 3 137 9412 47.57 886 866 179.7
B 6 36 13910840 178414.11 390 379 78.0
B 6 159 958675 12291.0 390 379 78.0
B 12 111 9277 114.12 390 379 78.0
C 14 238 181367 899.77 850 855 200.6
C 14 254 65546 322.46 850 855 200.6
C 2 114 16737 79.16 850 855 200.6
D 1 52 407432 1963.31 868 849 207.1
D 8 195 314660 1515.34 868 849 207.1
D 13 249 174165 836.91 868 849 207.1

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