ASTROSAT CZTI

Data Quality Report

Orbit 17526

Creation date: 2024-06-27T17:37:36.095995
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/AS1A05_140T01_9000002596_17526cztM0_level2.evt modeM0/AS1A05_140T01_9000002596_17526cztM0_level2_quad_clean.evt
Size (bytes)414,538,56084,876,480
Size395.3 MB 80.9 MB
Events in quadrant A2,863,223546,880
Events in quadrant B2,976,029557,370
Events in quadrant C3,097,401536,418
Events in quadrant D3,217,646518,552

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121491
B0124451
C0126021
D0132641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5881410.697160%
B5882560.952057%
C5882761.292078%
D58821121.904114%

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 7041 5882 0 0 0.00% 0.00%
B 7042 5883 4 4 0.06% 0.07%
C 7042 5883 0 0 0.00% 0.00%
D 7042 5883 68 68 0.97% 1.16%

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 0 226 6601 39.16 744 729 150.0
A 12 194 5441 31.42 744 729 150.0
A 3 137 5309 30.54 744 729 150.0
B 0 244 38597 267.44 742 723 141.6
B 10 245 33157 229.03 742 723 141.6
B 12 111 16614 112.21 742 723 141.6
C 14 238 112586 657.2 729 735 170.2
C 3 233 111950 653.46 729 735 170.2
C 5 218 29069 166.48 729 735 170.2
D 2 120 163330 916.77 729 709 177.4
D 5 222 161633 907.2 729 709 177.4
D 10 70 98318 550.27 729 709 177.4

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