ASTROSAT CZTI

Data Quality Report

Orbit 10725

Creation date: 2024-06-27T16:02:56.640713
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/AS1A03_078T01_9000001546_10725cztM0_level2.evt modeM0/AS1A03_078T01_9000001546_10725cztM0_level2_quad_clean.evt
Size (bytes)301,648,32055,287,360
Size287.7 MB 52.7 MB
Events in quadrant A1,869,909356,792
Events in quadrant B2,792,464355,674
Events in quadrant C1,788,584359,756
Events in quadrant D2,433,370341,619

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080162
B0108341
C077981
D097571

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3674411.115950%
B36743429.308655%
C3674350.952640%
D36742035.525313%

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 5029 3675 1 1 0.02% 0.03%
B 5029 3675 168 168 3.34% 4.57%
C 5029 3675 0 0 0.00% 0.00%
D 5029 3675 123 123 2.45% 3.35%

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 30033 307.94 465 456 96.0
A 4 2 13554 136.37 465 456 96.0
A 13 251 10785 107.54 465 456 96.0
B 4 239 863226 9758.83 456 445 88.4
B 4 81 87847 988.6 456 445 88.4
B 0 219 19446 214.92 456 445 88.4
C 12 4 3654 29.8 456 460 107.2
C 14 234 3565 28.97 456 460 107.2
C 13 61 3392 27.36 456 460 107.2
D 12 233 294701 2739.79 443 430 107.4
D 10 199 175946 1634.13 443 430 107.4
D 8 195 128086 1188.53 443 430 107.4

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