ASTROSAT CZTI

Data Quality Report

Orbit 00678

Creation date: 2024-06-27T14:01:26.021075
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/AS1P01_141T01_9000000096_00678cztM0_level2.evt modeM0/AS1P01_141T01_9000000096_00678cztM0_level2_quad_clean.evt
Size (bytes)918,273,60080,879,040
Size875.7 MB 77.1 MB
Events in quadrant A7,042,378512,940
Events in quadrant B7,447,634518,038
Events in quadrant C6,652,386512,758
Events in quadrant D6,269,800487,438

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252021
B0263861
C0240361
D0228781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A598360.100284%
B5983570.952699%
C598360.100284%
D5983450.752131%

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 7148 5984 182 182 2.55% 3.04%
B 7148 5984 312 312 4.36% 5.21%
C 7148 5984 120 120 1.68% 2.01%
D 7148 5984 174 174 2.43% 2.91%

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 3 111 5518 9.2 1836 1819 402.1
A 15 69 4706 7.18 1836 1819 402.1
A 14 203 4649 7.04 1836 1819 402.1
B 8 4 166324 383.84 1847 1857 428.5
B 0 220 129753 298.49 1847 1857 428.5
B 7 221 113352 260.21 1847 1857 428.5
C 15 241 43970 90.4 1685 1748 467.1
C 9 52 10464 18.66 1685 1748 467.1
C 5 254 6009 9.12 1685 1748 467.1
D 1 4 216853 438.12 1601 1654 491.2
D 12 233 29148 55.97 1601 1654 491.2
D 2 53 26050 49.67 1601 1654 491.2

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