ASTROSAT CZTI

Data Quality Report

Orbit 33500

Creation date: 2024-06-27T20:49:31.666619
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/AS1A11_060T01_9000004804_33500cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33500cztM0_level2_quad_clean.evt
Size (bytes)570,755,52074,278,080
Size544.3 MB 70.8 MB
Events in quadrant A2,729,028471,011
Events in quadrant B3,575,481468,038
Events in quadrant C6,358,451443,690
Events in quadrant D4,216,596447,196

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120333
B0143552
C0229742
D0168502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A600060.100000%
B60001742.900000%
C60004166.933333%
D60001161.933333%

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 9077 6002 0 0 0.00% 0.00%
B 9077 6002 115 115 1.27% 1.92%
C 9076 6001 460 460 5.07% 7.67%
D 9077 6002 103 103 1.13% 1.72%

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 13 254 10548 69.75 705 691 141.3
A 3 137 7296 46.74 705 691 141.3
A 0 226 5940 37.14 705 691 141.3
B 5 172 585213 4353.56 697 678 134.3
B 5 255 186930 1387.19 697 678 134.3
B 4 170 28521 207.37 697 678 134.3
C 4 254 3169114 20134.54 676 681 157.4
C 15 214 258540 1638.62 676 681 157.4
C 0 10 140347 887.54 676 681 157.4
D 8 195 976820 5831.41 682 663 167.4
D 2 250 248769 1482.15 682 663 167.4
D 13 249 143368 852.5 682 663 167.4

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