ASTROSAT CZTI

Data Quality Report

Orbit 44244

Creation date: 2024-06-27T23:00:55.567708
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_079T01_9000005978_44244cztM0_level2.fits modeM0/AS1A13_079T01_9000005978_44244cztM0_level2_quad_clean.evt
Size (bytes)573,543,360107,634,240
Size547.0 MB 102.6 MB
Events in quadrant A10,176,537563,228
Events in quadrant B3,425,396797,212
Events in quadrant C3,181,549749,425
Events in quadrant D3,919,459675,520

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0351192
B0148212
C0145213
D0167612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6796228333.593290%
B6796761.118305%
C6795440.647535%
D67951852.722590%

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 7821 6797 1703 1703 21.77% 25.06%
B 7821 6797 9 9 0.12% 0.13%
C 7820 6796 31 31 0.40% 0.46%
D 7820 6796 144 144 1.84% 2.12%

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 15 223 5584447 40770.07 664 651 137.0
A 10 83 1392962 10165.95 664 651 137.0
A 12 227 345244 2516.04 664 651 137.0
B 5 255 101832 672.7 772 750 150.3
B 0 155 67188 442.14 772 750 150.3
B 4 173 43279 283.03 772 750 150.3
C 14 254 209721 1190.99 748 753 175.5
C 3 233 23129 127.53 748 753 175.5
C 5 250 15429 83.64 748 753 175.5
D 13 249 427118 2308.86 735 713 184.7
D 4 221 309535 1672.19 735 713 184.7
D 5 222 152366 821.16 735 713 184.7

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