ASTROSAT CZTI

Data Quality Report

Orbit 21799

Creation date: 2024-06-27T18:32:22.753867
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/AS1A07_006T02_9000003228_21799cztM0_level2.evt modeM0/AS1A07_006T02_9000003228_21799cztM0_level2_quad_clean.evt
Size (bytes)448,568,64084,853,440
Size427.8 MB 80.9 MB
Events in quadrant A3,218,133543,326
Events in quadrant B3,409,972562,412
Events in quadrant C3,131,039533,730
Events in quadrant D3,411,265503,998

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132334
B0137532
C0127912
D0139792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6103190.311322%
B6103550.901196%
C6103370.606259%
D61031161.900705%

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 7468 6104 3 3 0.04% 0.05%
B 7468 6104 17 17 0.23% 0.28%
C 7468 6104 0 0 0.00% 0.00%
D 7468 6104 70 70 0.94% 1.15%

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 136180 847.55 799 784 159.7
A 13 254 11935 69.8 799 784 159.7
A 0 226 6994 38.87 799 784 159.7
B 3 64 106453 696.79 807 790 151.6
B 4 216 54870 356.63 807 790 151.6
B 0 197 28025 179.6 807 790 151.6
C 14 238 122637 678.61 769 775 179.6
C 0 10 6006 29.13 769 775 179.6
C 13 61 5394 25.72 769 775 179.6
D 13 153 163805 883.4 762 741 184.6
D 7 238 131328 707.46 762 741 184.6
D 1 52 69467 372.32 762 741 184.6

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