ASTROSAT CZTI

Data Quality Report

Orbit 34254

Creation date: 2024-06-27T20:58:10.284068
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/AS1A11_059T09_9000004888_34254cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34254cztM0_level2_quad_clean.evt
Size (bytes)539,913,60076,279,680
Size514.9 MB 72.7 MB
Events in quadrant A2,701,211487,186
Events in quadrant B3,287,010492,937
Events in quadrant C4,248,201465,956
Events in quadrant D5,711,499447,536

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120200
B0136350
C0162690
D0210770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A595080.134454%
B59501222.050420%
C59503455.798319%
D59504146.957983%

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 7262 5951 2 2 0.03% 0.03%
B 7262 5951 85 85 1.17% 1.43%
C 7262 5951 304 304 4.19% 5.11%
D 7262 5951 401 401 5.52% 6.74%

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 10 83 24610 172.79 681 666 138.6
A 9 143 24230 170.05 681 666 138.6
A 13 6 19675 137.18 681 666 138.6
B 5 172 441850 3386.26 674 657 130.3
B 0 189 65577 498.28 674 657 130.3
B 15 222 36514 275.21 674 657 130.3
C 0 207 831017 5520.94 645 649 150.4
C 0 10 305580 2027.42 645 649 150.4
C 14 254 288159 1911.59 645 649 150.4
D 8 195 1781509 11180.64 645 626 159.3
D 7 223 595534 3734.92 645 626 159.3
D 7 80 499801 3133.89 645 626 159.3

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