ASTROSAT CZTI

Data Quality Report

Orbit 07945

Creation date: 2024-06-27T15:25:50.914386
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/AS1G06_117T01_9000001086_07945cztM0_level2.evt modeM0/AS1G06_117T01_9000001086_07945cztM0_level2_quad_clean.evt
Size (bytes)448,799,04097,963,200
Size428.0 MB 93.4 MB
Events in quadrant A3,112,027620,417
Events in quadrant B3,228,087646,781
Events in quadrant C3,152,550646,192
Events in quadrant D3,664,076606,602

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135903
B0138762
C0136612
D0154192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6405230.359094%
B6405530.827479%
C6405170.265418%
D6405580.905543%

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 8995 6407 3 3 0.03% 0.05%
B 8995 6407 9 9 0.10% 0.14%
C 8995 6407 0 0 0.00% 0.00%
D 8995 6407 35 35 0.39% 0.55%

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 15 234 61031 378.75 785 768 159.1
A 8 15 9643 55.78 785 768 159.1
A 0 226 7396 41.66 785 768 159.1
B 10 245 65898 435.28 800 781 149.6
B 11 51 25803 167.26 800 781 149.6
B 12 111 15881 100.94 800 781 149.6
C 1 16 81106 445.01 786 791 180.5
C 13 61 6112 29.48 786 791 180.5
C 14 67 2687 10.51 786 791 180.5
D 1 52 620435 3314.24 775 753 187.0
D 13 169 30561 159.42 775 753 187.0
D 12 233 28124 146.39 775 753 187.0

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