ASTROSAT CZTI

Data Quality Report

Orbit 20322

Creation date: 2024-06-27T18:13:52.107240
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/AS1A05_174T01_9000003008_20322cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20322cztM0_level2_quad_clean.evt
Size (bytes)447,857,280102,366,720
Size427.1 MB 97.6 MB
Events in quadrant A3,285,117665,095
Events in quadrant B3,307,444686,546
Events in quadrant C3,363,222666,288
Events in quadrant D3,188,643651,683

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135432
B0135992
C0136522
D0133012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6175180.291498%
B6175400.647773%
C6175701.133603%
D6174190.307742%

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 7545 6176 4 4 0.05% 0.06%
B 7545 6176 4 4 0.05% 0.06%
C 7545 6176 2 2 0.03% 0.03%
D 7544 6175 7 7 0.09% 0.11%

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 14 238 136380 836.82 813 799 162.0
A 9 143 12372 71.43 813 799 162.0
A 13 254 8991 50.56 813 799 162.0
B 0 230 74880 486.94 813 793 152.1
B 7 220 26327 167.82 813 793 152.1
B 12 111 17719 111.24 813 793 152.1
C 14 238 126158 667.6 804 811 187.8
C 3 9 95972 506.83 804 811 187.8
C 13 61 5499 24.97 804 811 187.8
D 9 1 86307 437.08 810 787 195.7
D 1 52 25922 128.46 810 787 195.7
D 2 234 25448 126.04 810 787 195.7

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