ASTROSAT CZTI

Data Quality Report

Orbit 04810

Creation date: 2024-06-27T14:47:20.768785
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/AS1G05_142T01_9000000610_04810cztM0_level2.evt modeM0/AS1G05_142T01_9000000610_04810cztM0_level2_quad_clean.evt
Size (bytes)574,721,28072,132,480
Size548.1 MB 68.8 MB
Events in quadrant A3,287,023424,537
Events in quadrant B3,440,529426,468
Events in quadrant C3,786,026425,058
Events in quadrant D6,396,512399,302

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150852
B0152131
C0165181
D0241141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7297881.205975%
B72971051.438948%
C72971852.535288%
D72976989.565575%

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 7532 7298 4 4 0.05% 0.05%
B 7532 7298 4 4 0.05% 0.05%
C 7532 7298 116 116 1.54% 1.59%
D 7532 7298 780 780 10.36% 10.69%

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 13 251 27979 157.15 836 816 172.8
A 0 50 20308 112.77 836 816 172.8
A 13 6 11914 64.21 836 816 172.8
B 10 16 53598 316.07 852 831 166.9
B 15 85 22121 127.53 852 831 166.9
B 14 167 20039 115.06 852 831 166.9
C 9 247 593918 3116.35 810 814 190.3
C 12 4 14209 70.38 810 814 190.3
C 8 222 7805 36.73 810 814 190.3
D 13 235 2668103 13680.41 795 771 195.0
D 12 79 251739 1287.18 795 771 195.0
D 2 136 221028 1129.67 795 771 195.0

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