ASTROSAT CZTI

Data Quality Report

Orbit 28591

Creation date: 2024-06-27T19:53:45.114918
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_102T03_9000004106_28591cztM0_level2.evt modeM0/AS1A10_102T03_9000004106_28591cztM0_level2_quad_clean.evt
Size (bytes)542,969,28086,451,840
Size517.8 MB 82.4 MB
Events in quadrant A3,834,413542,379
Events in quadrant B3,639,889548,223
Events in quadrant C3,669,428528,268
Events in quadrant D4,832,433518,646

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157672
B0151902
C0151533
D0192512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69031802.607562%
B69031552.245401%
C69021912.767314%
D69022223.216459%

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 8623 6904 44 44 0.51% 0.64%
B 8623 6904 21 21 0.24% 0.30%
C 8622 6903 30 30 0.35% 0.43%
D 8622 6904 104 104 1.21% 1.51%

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 15 174 434615 2463.32 876 858 176.1
A 8 192 13701 72.94 876 858 176.1
A 13 254 11940 62.94 876 858 176.1
B 4 171 131170 780.81 870 849 166.9
B 0 230 25447 147.38 870 849 166.9
B 10 246 24494 141.67 870 849 166.9
C 14 238 134056 673.89 845 848 197.7
C 7 247 117360 589.42 845 848 197.7
C 15 208 92904 465.7 845 848 197.7
D 8 195 799077 3942.35 851 830 202.5
D 1 52 535038 2638.32 851 830 202.5
D 2 250 127283 624.52 851 830 202.5

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