ASTROSAT CZTI

Data Quality Report

Orbit 13675

Creation date: 2024-06-27T16:44:22.181947
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/AS1G08_070T01_9000002028_13675cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13675cztM0_level2_quad_clean.evt
Size (bytes)473,114,880102,775,680
Size451.2 MB 98.0 MB
Events in quadrant A3,314,160669,589
Events in quadrant B3,501,841724,551
Events in quadrant C3,414,615651,188
Events in quadrant D3,651,371608,862

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140143
B0144952
C0140622
D0151672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6579711.079191%
B6579701.063991%
C6579150.227998%
D6579430.653595%

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 8740 6582 33 33 0.38% 0.50%
B 8740 6582 9 9 0.10% 0.14%
C 8740 6582 0 0 0.00% 0.00%
D 8740 6582 12 12 0.14% 0.18%

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 69 114879 676.29 829 814 168.7
A 9 143 8377 44.84 829 814 168.7
A 0 226 7354 38.78 829 814 168.7
B 0 219 104279 640.7 852 836 161.5
B 0 182 30359 182.86 852 836 161.5
B 12 111 17983 106.2 852 836 161.5
C 3 233 241844 1274.13 814 820 189.2
C 13 61 5810 26.38 814 820 189.2
C 3 202 1922 5.83 814 820 189.2
D 8 195 215634 1109.99 800 778 193.6
D 5 222 147188 756.39 800 778 193.6
D 1 52 95310 488.37 800 778 193.6

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