ASTROSAT CZTI

Data Quality Report

Orbit 31944

Creation date: 2024-06-27T20:34:26.319602
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/AS1C06_002T04_9000004660_31944cztM0_level2.evt modeM0/AS1C06_002T04_9000004660_31944cztM0_level2_quad_clean.evt
Size (bytes)1,757,848,320156,623,040
Size1.6 GB 149.4 MB
Events in quadrant A8,042,942997,589
Events in quadrant B12,655,369956,652
Events in quadrant C19,529,359798,675
Events in quadrant D11,935,269889,157

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044085
B042383
C042485
D043278

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0433739056
B06612416782
C09176722935
D06152515076

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0408
B04411
C05019
D04413

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A165321140.689572%
B157074602.928631%
C15346474530.920109%
D159274903.076537%

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 25701 17869 8 8 0.03% 0.04%
B 25694 17042 155 155 0.60% 0.91%
C 25697 16567 2005 2005 7.80% 12.10%
D 25682 17300 356 356 1.39% 2.06%

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 12 96 204123 506.09 2023 1977 399.4
A 13 254 31615 74.2 2023 1977 399.4
A 3 137 20083 45.33 2023 1977 399.4
B 6 159 4369329 12407.34 1878 1829 352.0
B 5 255 248150 699.76 1878 1829 352.0
B 10 245 227472 641.01 1878 1829 352.0
C 3 233 12393206 33014.53 1627 1634 375.3
C 14 238 364839 967.68 1627 1634 375.3
C 0 10 207928 549.62 1627 1634 375.3
D 8 195 2510791 5727.99 1856 1805 438.0
D 12 33 1372629 3129.58 1856 1805 438.0
D 13 249 391797 890.35 1856 1805 438.0

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