ASTROSAT CZTI

Data Quality Report

Orbit 23512

Creation date: 2024-06-27T18:55:32.598686
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/AS1A07_112T02_9000003480_23512cztM0_level2.evt modeM0/AS1A07_112T02_9000003480_23512cztM0_level2_quad_clean.evt
Size (bytes)291,251,52042,811,200
Size277.8 MB 40.8 MB
Events in quadrant A1,829,952262,731
Events in quadrant B2,051,991265,163
Events in quadrant C1,884,071256,500
Events in quadrant D2,799,979247,973

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077191
B083871
C078451
D0107796

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3727491.314730%
B3727932.495305%
C3727812.173330%
D37263158.454106%

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 4017 3728 0 0 0.00% 0.00%
B 4017 3728 4 4 0.10% 0.11%
C 4017 3727 0 0 0.00% 0.00%
D 4016 3726 166 166 4.13% 4.46%

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 13 254 6351 60.5 474 464 97.3
A 3 137 4204 38.43 474 464 97.3
A 0 226 4081 37.17 474 464 97.3
B 0 189 162934 1784.61 466 453 91.0
B 0 229 34512 374.09 466 453 91.0
B 12 111 10904 114.79 466 453 91.0
C 14 238 70247 666.01 445 447 104.8
C 9 54 29649 278.64 445 447 104.8
C 3 233 18172 169.13 445 447 104.8
D 1 52 733067 6663.22 447 432 110.0
D 9 85 287063 2606.87 447 432 110.0
D 7 238 36933 331.97 447 432 110.0

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