ASTROSAT CZTI

Data Quality Report

Orbit 28939

Creation date: 2024-06-27T19:58:18.055903
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_082T04_9000004150_28939cztM0_level2.evt modeM0/AS1A10_082T04_9000004150_28939cztM0_level2_quad_clean.evt
Size (bytes)615,153,60092,436,480
Size586.7 MB 88.2 MB
Events in quadrant A3,236,018597,249
Events in quadrant B3,325,609613,777
Events in quadrant C3,473,568584,346
Events in quadrant D8,128,421524,388

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142321
B0143701
C0147811
D0288251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68701402.037846%
B68711592.314074%
C68712503.638481%
D6871185627.012080%

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 7201 6872 0 0 0.00% 0.00%
B 7202 6873 2 2 0.03% 0.03%
C 7202 6873 0 0 0.00% 0.00%
D 7202 6873 1739 1739 24.15% 25.30%

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 12027 65.96 837 819 169.9
A 3 137 8532 45.39 837 819 169.9
A 0 226 7248 37.83 837 819 169.9
B 12 111 20353 121.51 829 808 160.8
B 11 111 18726 111.4 829 808 160.8
B 14 111 17216 102.01 829 808 160.8
C 14 238 166687 882.74 794 798 187.9
C 3 233 128795 681.11 794 798 187.9
C 14 254 58862 308.97 794 798 187.9
D 8 195 3505176 20407.54 722 701 171.7
D 1 52 1680894 9784.23 722 701 171.7
D 12 79 179256 1039.77 722 701 171.7

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