ASTROSAT CZTI

Data Quality Report

Orbit 27518

Creation date: 2024-06-27T19:40:54.610821
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/AS1T03_249T01_9000003934_27518cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27518cztM0_level2_quad_clean.evt
Size (bytes)424,869,12084,441,600
Size405.2 MB 80.5 MB
Events in quadrant A3,033,464546,113
Events in quadrant B3,097,619555,493
Events in quadrant C3,012,001523,710
Events in quadrant D3,316,693513,126

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125990
B0127680
C0125600
D0136960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6000631.050000%
B6000941.566667%
C60001131.883333%
D6000811.350000%

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 7185 6000 0 0 0.00% 0.00%
B 7185 6000 0 0 0.00% 0.00%
C 7185 6000 0 0 0.00% 0.00%
D 7185 6000 34 34 0.47% 0.57%

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 6 16 17959 109.72 782 770 156.7
A 13 254 9421 55.22 782 770 156.7
A 3 137 7223 41.19 782 770 156.7
B 0 230 25816 170.12 772 753 147.3
B 12 111 17877 116.23 772 753 147.3
B 3 64 16410 106.27 772 753 147.3
C 14 238 119975 685.89 742 746 173.8
C 13 61 5073 24.89 742 746 173.8
C 4 224 1799 6.06 742 746 173.8
D 1 52 339052 1880.89 750 733 179.9
D 13 168 30589 165.99 750 733 179.9
D 7 69 27968 151.41 750 733 179.9

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