ASTROSAT CZTI

Data Quality Report

Orbit 32176

Creation date: 2024-06-27T20:37:15.629416
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/AS1A09_131T01_9000004690_32176cztM0_level2.evt modeM0/AS1A09_131T01_9000004690_32176cztM0_level2_quad_clean.evt
Size (bytes)612,544,320113,388,480
Size584.2 MB 108.1 MB
Events in quadrant A3,196,044754,651
Events in quadrant B5,390,810762,874
Events in quadrant C3,694,477757,556
Events in quadrant D5,844,732720,173

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137373
B0206232
C0150922
D0217322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6295200.317712%
B62952584.098491%
C62953555.639396%
D62952804.447975%

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 7545 6296 0 0 0.00% 0.00%
B 7545 6296 97 97 1.29% 1.54%
C 7545 6296 83 83 1.10% 1.32%
D 7545 6296 170 170 2.25% 2.70%

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 12 189 54346 332.29 809 794 161.2
A 13 6 19895 118.52 809 794 161.2
A 13 254 12195 70.74 809 794 161.2
B 6 159 1786680 12089.51 801 783 147.7
B 5 172 332249 2243.84 801 783 147.7
B 0 190 70265 470.35 801 783 147.7
C 0 10 349181 1973.27 770 777 176.6
C 14 238 156778 883.55 770 777 176.6
C 3 233 101060 567.98 770 777 176.6
D 8 195 2280371 12285.73 784 763 185.5
D 12 218 208221 1118.08 784 763 185.5
D 14 52 114249 611.62 784 763 185.5

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