ASTROSAT CZTI

Data Quality Report

Orbit 31184

Creation date: 2024-06-27T20:24:26.447553
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_058T02_9000004510_31184cztM0_level2.evt modeM0/AS1A10_058T02_9000004510_31184cztM0_level2_quad_clean.evt
Size (bytes)736,427,520103,907,520
Size702.3 MB 99.1 MB
Events in quadrant A3,848,619676,318
Events in quadrant B6,696,784661,566
Events in quadrant C3,852,435649,852
Events in quadrant D7,388,269626,524

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163712
B0252802
C0162502
D0275562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7659881.148975%
B76594435.784045%
C76592042.663533%
D76585477.142857%

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 8474 7663 18 18 0.21% 0.23%
B 8474 7663 167 167 1.97% 2.18%
C 8474 7663 1 1 0.01% 0.01%
D 8473 7662 348 348 4.11% 4.54%

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 136996 700.58 961 942 194.2
A 13 254 13859 66.51 961 942 194.2
A 3 137 10080 47.05 961 942 194.2
B 6 159 2113407 11549.38 942 917 182.9
B 4 80 736696 4022.64 942 917 182.9
B 0 190 62125 334.64 942 917 182.9
C 14 238 152151 693.51 922 925 218.1
C 0 10 74487 337.35 922 925 218.1
C 2 114 17635 76.63 922 925 218.1
D 8 195 3665638 16836.79 918 894 217.7
D 12 79 97229 442.59 918 894 217.7
D 12 233 74678 338.98 918 894 217.7

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