ASTROSAT CZTI

Data Quality Report

Orbit 43395

Creation date: 2024-06-27T22:51:28.966414
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/AS1A12_018T01_9000005874_43395cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43395cztM0_level2_quad_clean.evt
Size (bytes)507,381,120141,399,360
Size483.9 MB 134.8 MB
Events in quadrant A5,039,534946,803
Events in quadrant B4,521,842968,082
Events in quadrant C4,309,431910,149
Events in quadrant D4,220,735839,565

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201061
B0197291
C0184991
D0193191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88791531.723167%
B8880971.092342%
C8880140.157658%
D8880710.799550%

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 10222 8880 114 114 1.12% 1.28%
B 10223 8881 76 76 0.74% 0.86%
C 10223 8881 10 10 0.10% 0.11%
D 10223 8881 63 63 0.62% 0.71%

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 855581 4454.76 932 913 191.9
A 15 237 489846 2548.45 932 913 191.9
A 13 6 35293 179.2 932 913 191.9
B 5 255 530596 2984.34 933 908 177.5
B 0 189 157922 884.64 933 908 177.5
B 0 186 90157 502.84 933 908 177.5
C 15 214 368485 1721.73 915 918 213.5
C 3 233 256904 1199.07 915 918 213.5
C 15 111 44572 204.48 915 918 213.5
D 12 218 240873 1092.63 913 887 219.6
D 13 249 204847 928.61 913 887 219.6
D 12 233 48533 216.93 913 887 219.6

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