ASTROSAT CZTI

Data Quality Report

Orbit 26920

Creation date: 2024-06-27T19:34:30.247983
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_134T01_9000003896_26920cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26920cztM0_level2_quad_clean.evt
Size (bytes)711,800,64087,189,120
Size678.8 MB 83.2 MB
Events in quadrant A8,245,221460,742
Events in quadrant B3,813,072605,795
Events in quadrant C3,064,775585,369
Events in quadrant D6,006,939546,638

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287280
B0152570
C0130020
D0223480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6316230536.494617%
B63161802.849905%
C6316440.696643%
D63173936.221308%

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 7425 6315 1831 1831 24.66% 28.99%
B 7426 6316 108 108 1.45% 1.71%
C 7426 6316 0 0 0.00% 0.00%
D 7427 6318 407 407 5.48% 6.44%

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 14 235 5524902 40721.75 669 656 135.7
A 0 13 73179 534.6 669 656 135.7
A 6 16 29901 215.58 669 656 135.7
B 0 189 269753 1829.59 783 764 147.0
B 3 64 177222 1200.22 783 764 147.0
B 10 246 126611 855.98 783 764 147.0
C 14 238 121738 688.06 749 754 175.8
C 15 208 13299 71.35 749 754 175.8
C 0 207 6734 34.01 749 754 175.8
D 7 80 2286091 11935.01 729 712 191.5
D 15 36 502565 2620.84 729 712 191.5
D 2 250 238563 1242.14 729 712 191.5

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