ASTROSAT CZTI

Data Quality Report

Orbit 28886

Creation date: 2024-06-27T19:57:35.532560
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_064T01_9000004144_28886cztM0_level2.evt modeM0/AS1A10_064T01_9000004144_28886cztM0_level2_quad_clean.evt
Size (bytes)310,847,04045,953,280
Size296.4 MB 43.8 MB
Events in quadrant A1,332,525319,369
Events in quadrant B1,367,616325,732
Events in quadrant C2,631,113295,661
Events in quadrant D3,902,044260,496

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054901
B056201
C097031
D0134855

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2643250.945895%
B2643411.551267%
C26432168.172531%
D264278329.636639%

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 3473 2643 0 0 0.00% 0.00%
B 3473 2643 1 1 0.03% 0.04%
C 3473 2643 41 41 1.18% 1.55%
D 3471 2641 732 732 21.09% 27.72%

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 5018 65.7 344 338 71.2
A 3 137 3383 42.75 344 338 71.2
A 0 226 2897 35.93 344 338 71.2
B 15 32 21199 312.75 339 330 66.7
B 12 111 8242 118.57 339 330 66.7
B 15 201 7388 105.77 339 330 66.7
C 3 233 1206397 15466.35 322 323 78.0
C 15 208 97348 1244.22 322 323 78.0
C 14 238 54659 696.79 322 323 78.0
D 8 195 1957672 26351.78 306 297 74.3
D 1 52 446367 6005.36 306 297 74.3
D 7 80 306429 4121.4 306 297 74.3

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