ASTROSAT CZTI

Data Quality Report

Orbit 41172

Creation date: 2024-06-27T22:25:29.559499
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/AS1A12_101T04_9000005610_41172cztM0_level2.fits modeM0/AS1A12_101T04_9000005610_41172cztM0_level2_quad_clean.evt
Size (bytes)1,482,577,920269,712,000
Size1.4 GB 257.2 MB
Events in quadrant A9,251,3832,005,494
Events in quadrant B13,130,9211,879,815
Events in quadrant C18,593,0661,484,741
Events in quadrant D12,612,5521,643,466

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0367165
B04988812
C0663184
D0487354

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03420
B03420
C03420
D03420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16721290.173435%
B1672015809.449761%
C16721401524.011722%
D1672113367.989953%

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 25032 16725 7 7 0.03% 0.04%
B 25031 16723 1286 1286 5.14% 7.69%
C 25032 16724 3263 3263 13.04% 19.51%
D 25032 16725 1182 1182 4.72% 7.07%

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 1483976 3762.87 1961 1927 393.9
A 12 189 126373 315.96 1961 1927 393.9
A 13 254 29373 69.68 1961 1927 393.9
B 0 245 3546934 10051.79 1853 1806 352.7
B 0 186 1537214 4353.47 1853 1806 352.7
B 5 255 291780 822.19 1853 1806 352.7
C 9 54 10766365 28184.74 1663 1677 381.9
C 0 10 644386 1682.78 1663 1677 381.9
C 15 214 637972 1665.99 1663 1677 381.9
D 13 249 3862633 8519.36 1830 1783 453.2
D 2 249 785448 1729.24 1830 1783 453.2
D 2 16 358674 787.52 1830 1783 453.2

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