ASTROSAT CZTI

Data Quality Report

Orbit 37529

Creation date: 2024-06-27T21:41:06.497603
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/AS1A09_061T01_9000005330_37529cztM0_level2.evt modeM0/AS1A09_061T01_9000005330_37529cztM0_level2_quad_clean.evt
Size (bytes)1,441,716,480161,003,520
Size1.3 GB 153.5 MB
Events in quadrant A8,734,593978,022
Events in quadrant B9,044,712985,547
Events in quadrant C8,585,364968,117
Events in quadrant D16,244,042865,200

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0351905
B0366254
C0346494
D0587584

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15629750.479877%
B156293982.546548%
C156291571.004543%
D15629297419.028729%

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 19866 15632 58 58 0.29% 0.37%
B 19866 15632 275 275 1.38% 1.76%
C 19866 15632 144 144 0.72% 0.92%
D 19865 15630 2936 2936 14.78% 18.78%

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 10 83 820581 2232.17 1798 1758 366.8
A 15 222 418641 1136.45 1798 1758 366.8
A 9 143 178376 481.47 1798 1758 366.8
B 5 172 1115591 3286.01 1779 1733 339.0
B 0 229 250002 732.42 1779 1733 339.0
B 0 213 241740 708.05 1779 1733 339.0
C 14 254 814751 1988.17 1746 1756 408.9
C 15 214 673460 1642.64 1746 1756 408.9
C 0 10 143027 345.48 1746 1756 408.9
D 12 227 4013227 10183.61 1588 1542 393.9
D 12 233 3224802 8182.2 1588 1542 393.9
D 2 249 1088660 2759.63 1588 1542 393.9

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