ASTROSAT CZTI

Data Quality Report

Orbit 46799

Creation date: 2024-06-27T23:27:48.461244
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/AS1A13_068T13_9000006268_46799cztM0_level2.fits modeM0/AS1A13_068T13_9000006268_46799cztM0_level2_quad_clean.evt
Size (bytes)605,914,560133,649,280
Size577.8 MB 127.5 MB
Events in quadrant A7,624,762885,055
Events in quadrant B4,143,605913,423
Events in quadrant C3,731,810885,078
Events in quadrant D6,271,579774,207

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280690
B0182000
C0174010
D0245611

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8481901.061196%
B8481700.825374%
C8482100.117897%
D84815005.895531%

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 8481 8481 36 36 0.42% 0.42%
B 8481 8481 38 38 0.45% 0.45%
C 8482 8482 13 13 0.15% 0.15%
D 8481 8481 440 440 5.19% 5.19%

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 10 83 3825898 19815.24 923 900 193.0
A 13 248 112911 580.27 923 900 193.0
A 15 235 58724 299.55 923 900 193.0
B 3 112 220298 1196.48 927 896 183.4
B 5 172 120377 651.58 927 896 183.4
B 0 198 37530 199.78 927 896 183.4
C 3 233 85768 393.8 914 917 215.5
C 14 254 55864 255.01 914 917 215.5
C 12 249 19501 86.25 914 917 215.5
D 13 249 1108082 4993.5 887 857 221.7
D 1 52 729793 3287.45 887 857 221.7
D 13 138 483340 2175.96 887 857 221.7

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