ASTROSAT CZTI

Data Quality Report

Orbit 22824

Creation date: 2024-06-27T18:46:15.583652
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/AS1C05_012T02_9000003372_22824cztM0_level2.evt modeM0/AS1C05_012T02_9000003372_22824cztM0_level2_quad_clean.evt
Size (bytes)511,902,720124,130,880
Size488.2 MB 118.4 MB
Events in quadrant A3,135,635847,481
Events in quadrant B3,130,806870,172
Events in quadrant C3,087,561813,635
Events in quadrant D5,711,290778,114

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134682
B0135042
C0134172
D0215842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6453140.216953%
B6453270.418410%
C6453490.759337%
D64532043.161320%

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 7648 6454 0 0 0.00% 0.00%
B 7648 6454 0 0 0.00% 0.00%
C 7648 6454 0 0 0.00% 0.00%
D 7648 6454 136 136 1.78% 2.11%

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 11 47 80608 506.06 792 778 157.7
A 13 254 11425 67.49 792 778 157.7
A 0 226 6819 38.29 792 778 157.7
B 0 230 17757 114.26 793 773 148.6
B 12 111 17673 113.69 793 773 148.6
B 11 111 15956 102.14 793 773 148.6
C 14 238 120892 689.94 754 758 174.1
C 2 16 13894 75.44 754 758 174.1
C 10 22 9737 51.57 754 758 174.1
D 7 238 2410412 13395.79 751 728 179.9
D 1 52 328942 1824.59 751 728 179.9
D 12 227 121728 672.66 751 728 179.9

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