ASTROSAT CZTI

Data Quality Report

Orbit 18923

Creation date: 2024-06-27T17:56:36.933290
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_163T01_9000002820_18923cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18923cztM0_level2_quad_clean.evt
Size (bytes)807,341,76072,313,920
Size769.9 MB 69.0 MB
Events in quadrant A3,566,241452,562
Events in quadrant B6,322,982423,955
Events in quadrant C3,756,068447,586
Events in quadrant D10,307,848352,590

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152681
B0235821
C0157181
D0357791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7352911.237758%
B735298613.411317%
C73531391.890385%
D7353265436.094111%

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 7578 7355 0 0 0.00% 0.00%
B 7577 7354 606 606 8.00% 8.24%
C 7579 7356 1 1 0.01% 0.01%
D 7578 7354 1780 1780 23.49% 24.20%

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 3 1 43271 229.14 901 882 185.0
A 14 235 32624 171.59 901 882 185.0
A 8 205 10469 51.82 901 882 185.0
B 3 112 2738121 16723.49 843 820 163.7
B 7 220 111243 674.62 843 820 163.7
B 0 189 32809 195.43 843 820 163.7
C 3 233 257169 1264.03 860 864 202.8
C 14 238 132531 649.35 860 864 202.8
C 5 112 7226 31.38 860 864 202.8
D 7 238 7084712 39641.03 723 702 178.7
D 1 52 159508 888.65 723 702 178.7
D 12 218 126579 704.39 723 702 178.7

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