ASTROSAT CZTI

Data Quality Report

Orbit 16957

Creation date: 2024-06-27T17:30:01.069531
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_206T01_9000002518_16957cztM0_level2.evt modeM0/AS1A05_206T01_9000002518_16957cztM0_level2_quad_clean.evt
Size (bytes)631,673,280115,390,080
Size602.4 MB 110.0 MB
Events in quadrant A5,187,638730,312
Events in quadrant B4,821,083750,628
Events in quadrant C4,690,223726,320
Events in quadrant D3,880,767723,046

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211052
B0196592
C0194662
D0171122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81146387.862953%
B81143454.251910%
C81141251.540547%
D8114580.714814%

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 8680 8115 364 364 4.19% 4.49%
B 8680 8116 170 170 1.96% 2.09%
C 8680 8116 1 1 0.01% 0.01%
D 8680 8116 20 20 0.23% 0.25%

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 1703344 9306.84 902 881 182.9
A 9 143 16718 86.58 902 881 182.9
A 0 226 8089 39.4 902 881 182.9
B 3 64 689389 3850.44 927 902 178.8
B 15 35 230182 1282.27 927 902 178.8
B 3 209 58780 323.69 927 902 178.8
C 3 233 1049027 4966.87 895 898 211.0
C 14 238 137068 645.28 895 898 211.0
C 0 207 14298 63.5 895 898 211.0
D 1 52 133100 594.44 910 882 222.4
D 15 0 110613 493.34 910 882 222.4
D 11 129 96450 429.66 910 882 222.4

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