ASTROSAT CZTI

Data Quality Report

Orbit 31535

Creation date: 2024-06-27T20:29:39.970038
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/AS1A10_056T01_9000004598_31535cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31535cztM0_level2_quad_clean.evt
Size (bytes)1,589,080,320239,569,920
Size1.5 GB 228.5 MB
Events in quadrant A8,691,3411,537,448
Events in quadrant B14,341,0311,529,973
Events in quadrant C10,690,5061,458,199
Events in quadrant D13,144,2411,442,949

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381844
B0568744
C0436694
D0523509

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186792751.472242%
B186804762.548180%
C186806103.265525%
D186793872.071845%

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 20539 18679 0 0 0.00% 0.00%
B 20540 18680 8 8 0.04% 0.04%
C 20540 18680 87 87 0.42% 0.47%
D 20539 18679 112 112 0.55% 0.60%

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 13 254 34322 71.29 2250 2200 450.6
A 3 137 23598 47.49 2250 2200 450.6
A 0 226 18937 37.15 2250 2200 450.6
B 6 159 5026950 11839.65 2221 2162 424.4
B 4 80 347212 813.02 2221 2162 424.4
B 0 190 95115 219.02 2221 2162 424.4
C 3 233 1013219 2017.72 2135 2135 501.1
C 10 22 814972 1622.1 2135 2135 501.1
C 14 238 345235 684.69 2135 2135 501.1
D 8 195 4110801 7941.95 2169 2105 517.3
D 2 250 332817 639.25 2169 2105 517.3
D 13 249 225778 432.35 2169 2105 517.3

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