ASTROSAT CZTI

Data Quality Report

Orbit 16636

Creation date: 2024-06-27T17:25:39.183067
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/AS1C04_007T07_9000002452_16636cztM0_level2.evt modeM0/AS1C04_007T07_9000002452_16636cztM0_level2_quad_clean.evt
Size (bytes)791,516,16085,138,560
Size754.8 MB 81.2 MB
Events in quadrant A5,202,803532,490
Events in quadrant B3,932,279554,048
Events in quadrant C8,565,779434,763
Events in quadrant D5,751,329521,757

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206763
B0167612
C0304562
D0224652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76746318.222570%
B76742102.736513%
C7674207126.987230%
D76744215.486057%

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 8105 7677 350 350 4.32% 4.56%
B 8105 7677 2 2 0.02% 0.03%
C 8105 7677 1272 1272 15.69% 16.57%
D 8105 7677 261 261 3.22% 3.40%

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 15 174 1696482 9112.77 909 889 186.1
A 15 223 9001 43.6 909 889 186.1
A 0 226 7980 38.11 909 889 186.1
B 15 35 102924 555.62 935 910 183.6
B 4 216 37052 196.85 935 910 183.6
B 0 198 36572 194.23 935 910 183.6
C 7 247 4753423 25112.67 799 805 189.3
C 3 233 563149 2971.41 799 805 189.3
C 14 238 120096 630.33 799 805 189.3
D 1 52 2102801 9394.02 899 870 223.8
D 10 70 106346 471.4 899 870 223.8
D 5 222 102218 452.95 899 870 223.8

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