ASTROSAT CZTI

Data Quality Report

Orbit 24496

Creation date: 2024-06-27T19:06:35.653690
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/AS1T03_183T01_9000003606_24496cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24496cztM0_level2_quad_clean.evt
Size (bytes)564,402,240127,840,320
Size538.3 MB 121.9 MB
Events in quadrant A5,074,180832,924
Events in quadrant B4,157,838871,770
Events in quadrant C3,477,365832,096
Events in quadrant D3,873,379811,813

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199881
B0172711
C0153371
D0167941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75156588.755822%
B75153314.404524%
C75151612.142382%
D75161321.756253%

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 7695 7517 245 245 3.18% 3.26%
B 7695 7517 138 138 1.79% 1.84%
C 7695 7517 0 0 0.00% 0.00%
D 7696 7518 58 58 0.75% 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 14 111 1638394 9388.06 862 844 174.4
A 4 2 112801 641.85 862 844 174.4
A 13 254 10753 56.81 862 844 174.4
B 3 64 384909 2294.25 875 851 167.4
B 5 172 321155 1913.4 875 851 167.4
B 12 111 20795 119.14 875 851 167.4
C 14 238 136784 687.64 850 854 197.7
C 2 16 22963 111.84 850 854 197.7
C 13 61 6050 26.29 850 854 197.7
D 12 218 353014 1696.04 856 829 207.7
D 1 52 135718 649.59 856 829 207.7
D 8 195 96947 462.88 856 829 207.7

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