ASTROSAT CZTI

Data Quality Report

Orbit 25070

Creation date: 2024-06-27T19:13:28.112094
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/AS1T03_206T01_9000003672_25070cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25070cztM0_level2_quad_clean.evt
Size (bytes)489,787,20090,639,360
Size467.1 MB 86.4 MB
Events in quadrant A3,119,338599,786
Events in quadrant B3,323,243621,900
Events in quadrant C3,284,754570,275
Events in quadrant D4,697,529532,158

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128392
B0134562
C0134042
D0181952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6027140.232288%
B6027440.730048%
C6027580.962336%
D60271212.007632%

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 7437 6028 0 0 0.00% 0.00%
B 7437 6028 9 9 0.12% 0.15%
C 7437 6028 0 0 0.00% 0.00%
D 7437 6028 98 98 1.32% 1.63%

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 10698 61.24 808 795 161.7
A 0 226 6914 37.84 808 795 161.7
A 3 137 6636 36.12 808 795 161.7
B 0 229 62139 402.14 815 799 152.5
B 4 80 47463 305.92 815 799 152.5
B 0 190 23166 146.63 815 799 152.5
C 14 238 125677 693.72 770 775 180.0
C 7 247 119969 662.01 770 775 180.0
C 3 233 18819 100.22 770 775 180.0
D 8 195 875186 4727.68 764 745 185.0
D 1 52 391879 2114.67 764 745 185.0
D 9 35 186409 1003.8 764 745 185.0

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