ASTROSAT CZTI

Data Quality Report

Orbit 22740

Creation date: 2024-06-27T18:45:03.014600
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/AS1A08_007T01_9000003362_22740cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22740cztM0_level2_quad_clean.evt
Size (bytes)471,360,96086,567,040
Size449.5 MB 82.6 MB
Events in quadrant A3,269,309563,639
Events in quadrant B3,370,555568,603
Events in quadrant C3,416,383535,690
Events in quadrant D3,805,991528,648

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132731
B0135421
C0139212
D0153111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6090891.461412%
B6090921.510673%
C60891462.397766%
D60891412.315651%

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 7420 6091 0 0 0.00% 0.00%
B 7420 6091 2 2 0.03% 0.03%
C 7419 6090 9 9 0.12% 0.15%
D 7419 6090 47 47 0.63% 0.77%

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 10157 55.06 848 834 169.3
A 0 226 7552 39.68 848 834 169.3
A 12 194 6112 31.17 848 834 169.3
B 0 245 44049 284.27 833 815 152.1
B 0 190 31595 202.38 833 815 152.1
B 0 197 30732 196.71 833 815 152.1
C 14 238 130914 710.29 803 809 183.2
C 0 207 94975 514.09 803 809 183.2
C 10 22 57973 312.08 803 809 183.2
D 1 52 297996 1502.89 824 802 197.7
D 12 233 160286 806.5 824 802 197.7
D 12 227 90666 454.43 824 802 197.7

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