ASTROSAT CZTI

Data Quality Report

Orbit 23971

Creation date: 2024-06-27T19:00:42.353083
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/AS1A07_001T05_9000003550_23971cztM0_level2.evt modeM0/AS1A07_001T05_9000003550_23971cztM0_level2_quad_clean.evt
Size (bytes)238,668,48055,880,640
Size227.6 MB 53.3 MB
Events in quadrant A1,303,779405,232
Events in quadrant B1,344,565404,800
Events in quadrant C1,298,773379,590
Events in quadrant D3,099,066312,471

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055400
B056620
C055940
D0110080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A264220.075700%
B264360.227015%
C264370.264851%
D264381630.874007%

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 2642 2642 0 0 0.00% 0.00%
B 2643 2643 0 0 0.00% 0.00%
C 2643 2643 1 1 0.04% 0.04%
D 2643 2643 395 395 14.95% 14.95%

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 13 254 5086 68.98 338 331 68.9
A 0 226 3093 40.07 338 331 68.9
A 3 137 2636 33.44 338 331 68.9
B 0 197 16275 254.48 331 325 62.7
B 4 200 14164 220.8 331 325 62.7
B 5 172 13780 214.67 331 325 62.7
C 14 238 50992 704.56 308 310 71.9
C 0 10 33181 456.96 308 310 71.9
C 7 221 9171 123.18 308 310 71.9
D 12 218 1403515 21100.19 267 259 66.5
D 12 250 187456 2814.8 267 259 66.5
D 12 202 137733 2067.14 267 259 66.5

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