ASTROSAT CZTI

Data Quality Report

Orbit 31261

Creation date: 2024-06-27T20:25:50.125039
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/AS1A10_113T01_9000004524_31261cztM0_level2.evt modeM0/AS1A10_113T01_9000004524_31261cztM0_level2_quad_clean.evt
Size (bytes)578,888,64091,578,240
Size552.1 MB 87.3 MB
Events in quadrant A3,451,901586,253
Events in quadrant B5,496,593579,156
Events in quadrant C3,859,915554,569
Events in quadrant D4,239,500555,788

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146502
B0217172
C0158362
D0173202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7146460.643717%
B71451562.183345%
C71462112.952701%
D7146881.231458%

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 8931 7148 0 0 0.00% 0.00%
B 8930 7147 9 9 0.10% 0.13%
C 8931 7148 43 43 0.48% 0.60%
D 8931 7148 40 40 0.45% 0.56%

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 13462 69.6 892 873 180.9
A 3 137 9179 45.92 892 873 180.9
A 0 226 7641 37.42 892 873 180.9
B 6 159 1920171 11365.02 878 855 168.9
B 4 80 61382 358.4 878 855 168.9
B 0 230 44023 255.61 878 855 168.9
C 0 10 334477 1679.82 847 853 198.6
C 14 238 138860 694.87 847 853 198.6
C 3 233 54797 271.61 847 853 198.6
D 8 195 691383 3136.14 856 838 220.2
D 12 233 172621 780.16 856 838 220.2
D 2 250 116074 523.35 856 838 220.2

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