ASTROSAT CZTI

Data Quality Report

Orbit 24210

Creation date: 2024-06-27T19:03:30.155817
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_010T12_9000003582_24210cztM0_level2.evt modeM0/AS1A07_010T12_9000003582_24210cztM0_level2_quad_clean.evt
Size (bytes)1,161,613,440205,565,760
Size1.1 GB 196.0 MB
Events in quadrant A6,952,8061,336,681
Events in quadrant B7,207,0061,352,412
Events in quadrant C8,321,3251,281,398
Events in quadrant D11,704,3881,239,163

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301993
B0307213
C0342843
D0448614

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14727630.427786%
B147271170.794459%
C147273012.043865%
D147264903.327448%

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 16642 14730 8 8 0.05% 0.05%
B 16642 14730 50 50 0.30% 0.34%
C 16642 14730 74 74 0.44% 0.50%
D 16641 14729 367 367 2.21% 2.49%

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 90592 247.15 1779 1737 359.5
A 13 254 23452 60.4 1779 1737 359.5
A 3 137 16125 40.02 1779 1737 359.5
B 5 172 147044 429.35 1768 1726 338.5
B 0 229 89966 260.71 1768 1726 338.5
B 12 111 41026 116.11 1768 1726 338.5
C 2 16 711486 1804.28 1687 1697 393.4
C 7 247 498596 1263.11 1687 1697 393.4
C 14 238 268708 678.74 1687 1697 393.4
D 8 195 3809980 9209.51 1701 1653 413.5
D 7 238 849677 2050.74 1701 1653 413.5
D 1 52 480048 1156.88 1701 1653 413.5

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