ASTROSAT CZTI

Data Quality Report

Orbit 30899

Creation date: 2024-06-27T20:20:56.871228
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/AS1C06_004T01_9000004466_30899cztM0_level2.evt modeM0/AS1C06_004T01_9000004466_30899cztM0_level2_quad_clean.evt
Size (bytes)551,473,92073,399,680
Size525.9 MB 70.0 MB
Events in quadrant A3,076,992462,493
Events in quadrant B5,460,797449,360
Events in quadrant C3,578,715427,469
Events in quadrant D4,153,797439,053

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132891
B0205211
C0147451
D0166591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6361560.880365%
B63611742.735419%
C63613645.722371%
D63621322.074819%

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 7316 6361 0 0 0.00% 0.00%
B 7316 6361 12 12 0.16% 0.19%
C 7316 6361 27 27 0.37% 0.42%
D 7317 6362 54 54 0.74% 0.85%

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 13 254 12204 71.79 794 778 159.2
A 0 13 9752 56.38 794 778 159.2
A 3 137 7600 42.86 794 778 159.2
B 6 159 1941863 13034.43 780 761 148.9
B 6 36 155551 1039.41 780 761 148.9
B 0 190 143422 957.96 780 761 148.9
C 3 233 219793 1257.19 745 748 174.2
C 14 238 183581 1049.36 745 748 174.2
C 0 10 133756 763.39 745 748 174.2
D 8 195 555351 3054.38 764 745 181.6
D 1 52 359855 1977.73 764 745 181.6
D 2 250 81928 447.1 764 745 181.6

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