ASTROSAT CZTI

Data Quality Report

Orbit 28127

Creation date: 2024-06-27T19:48:22.669540
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_090T14_9000004064_28127cztM0_level2.evt modeM0/AS1A10_090T14_9000004064_28127cztM0_level2_quad_clean.evt
Size (bytes)529,954,560103,173,120
Size505.4 MB 98.4 MB
Events in quadrant A3,339,631691,677
Events in quadrant B3,420,095693,938
Events in quadrant C3,473,793649,815
Events in quadrant D5,361,967622,271

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139130
B0141570
C0143840
D0203550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66961091.627838%
B66951402.091113%
C66951352.016430%
D66954276.377894%

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 7671 6696 1 1 0.01% 0.01%
B 7670 6696 3 3 0.04% 0.04%
C 7670 6696 4 4 0.05% 0.06%
D 7670 6696 311 311 4.05% 4.64%

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 1 113 9957 52.82 863 849 172.4
A 13 254 9915 52.57 863 849 172.4
A 3 137 8116 42.14 863 849 172.4
B 10 246 50693 311.97 849 830 159.8
B 12 111 19727 118.23 849 830 159.8
B 11 111 17946 107.09 849 830 159.8
C 14 238 134088 713.04 811 815 186.9
C 3 233 125497 667.08 811 815 186.9
C 15 208 49661 261.34 811 815 186.9
D 1 52 1718794 8967.85 812 790 191.6
D 2 250 246510 1282.64 812 790 191.6
D 5 222 112351 582.34 812 790 191.6

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