ASTROSAT CZTI

Data Quality Report

Orbit 26825

Creation date: 2024-06-27T19:33:24.375374
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/AS1A09_145T01_9000003866_26825cztM0_level2.evt modeM0/AS1A09_145T01_9000003866_26825cztM0_level2_quad_clean.evt
Size (bytes)685,105,92087,782,400
Size653.4 MB 83.7 MB
Events in quadrant A4,333,081572,261
Events in quadrant B4,426,408575,521
Events in quadrant C3,232,045558,120
Events in quadrant D8,319,624500,748

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169240
B0170560
C0133420
D0291700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64671482.288542%
B64674326.680068%
C64681011.561534%
D6468158824.551639%

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 7047 6467 35 35 0.50% 0.54%
B 7047 6468 268 268 3.80% 4.14%
C 7048 6469 1 1 0.01% 0.02%
D 7048 6469 1346 1346 19.10% 20.81%

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 0 13 1106480 6585.12 827 812 167.9
A 6 16 27996 161.9 827 812 167.9
A 12 96 11757 65.19 827 812 167.9
B 0 189 851077 5454.57 803 783 155.9
B 3 64 338157 2164.23 803 783 155.9
B 10 246 38570 242.4 803 783 155.9
C 14 238 126562 672.72 792 799 186.9
C 15 208 10602 52.44 792 799 186.9
C 3 233 9965 49.03 792 799 186.9
D 1 52 3547551 20303.22 724 707 174.7
D 7 80 1724384 9866.86 724 707 174.7
D 2 250 241775 1379.95 724 707 174.7

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