ASTROSAT CZTI

Data Quality Report

Orbit 19780

Creation date: 2024-06-27T18:06:55.599505
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/AS1A05_117T01_9000002958_19780cztM0_level2.evt modeM0/AS1A05_117T01_9000002958_19780cztM0_level2_quad_clean.evt
Size (bytes)775,261,44074,787,840
Size739.3 MB 71.3 MB
Events in quadrant A3,480,641483,150
Events in quadrant B3,671,554487,865
Events in quadrant C11,309,480333,284
Events in quadrant D4,531,470459,481

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149942
B0154802
C0385242
D0182362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71831241.726298%
B71831592.213560%
C7183331446.136712%
D71832443.396909%

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 7873 7184 12 12 0.15% 0.17%
B 7873 7183 34 34 0.43% 0.47%
C 7873 7183 2659 2659 33.77% 37.02%
D 7872 7183 157 157 1.99% 2.19%

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 4 2 90064 501.62 873 852 177.8
A 0 23 9270 47.33 873 852 177.8
A 8 192 8480 42.89 873 852 177.8
B 7 220 255340 1527.55 862 838 166.6
B 12 111 20311 116.88 862 838 166.6
B 11 111 18162 103.98 862 838 166.6
C 3 233 8630984 56331.45 648 651 153.2
C 14 238 96113 623.09 648 651 153.2
C 7 247 36789 235.88 648 651 153.2
D 1 52 841270 4111.51 844 818 204.4
D 12 218 273022 1331.62 844 818 204.4
D 2 184 125811 611.47 844 818 204.4

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