ASTROSAT CZTI

Data Quality Report

Orbit 19641

Creation date: 2024-06-27T18:05:05.868267
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_101T08_9000002922_19641cztM0_level2.evt modeM0/AS1A05_101T08_9000002922_19641cztM0_level2_quad_clean.evt
Size (bytes)500,083,200102,147,840
Size476.9 MB 97.4 MB
Events in quadrant A3,144,229668,641
Events in quadrant B3,354,279685,923
Events in quadrant C3,317,020666,980
Events in quadrant D4,907,587637,744

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131152
B0137352
C0135692
D0188132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6226280.449727%
B6225380.610442%
C6225590.947791%
D62252964.755020%

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 7576 6227 1 1 0.01% 0.02%
B 7575 6226 6 6 0.08% 0.10%
C 7575 6226 0 0 0.00% 0.00%
D 7575 6226 225 225 2.97% 3.61%

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 5 16 14936 87.56 812 797 161.5
A 0 226 7107 39.08 812 797 161.5
A 13 254 6177 33.32 812 797 161.5
B 3 112 105037 698.57 816 798 149.2
B 0 198 18169 116.41 816 798 149.2
B 4 216 17797 113.92 816 798 149.2
C 14 238 126499 673.7 808 814 186.6
C 3 233 19243 98.78 808 814 186.6
C 8 128 11672 58.2 808 814 186.6
D 7 238 977917 5063.8 799 778 193.0
D 1 52 677577 3507.36 799 778 193.0
D 12 218 96009 493.51 799 778 193.0

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