ASTROSAT CZTI

Data Quality Report

Orbit 27883

Creation date: 2024-06-27T19:45:35.454399
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_048T01_9000004028_27883cztM0_level2.evt modeM0/AS1A10_048T01_9000004028_27883cztM0_level2_quad_clean.evt
Size (bytes)645,744,960106,361,280
Size615.8 MB 101.4 MB
Events in quadrant A3,659,397735,265
Events in quadrant B3,898,298731,067
Events in quadrant C3,938,310686,472
Events in quadrant D7,535,339529,483

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160130
B0166970
C0165730
D0277010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7730730.944373%
B77311602.069590%
C77301441.862872%
D7730222328.758085%

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 7860 7731 1 1 0.01% 0.01%
B 7861 7732 30 30 0.38% 0.39%
C 7860 7731 4 4 0.05% 0.05%
D 7860 7730 844 844 10.74% 10.92%

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 14 235 35878 183.69 939 919 190.3
A 13 254 13853 67.96 939 919 190.3
A 3 137 9270 43.88 939 919 190.3
B 0 230 133013 731.82 934 910 180.5
B 0 190 36530 197.33 934 910 180.5
B 10 247 30581 164.37 934 910 180.5
C 3 233 175639 834.9 890 894 209.3
C 14 238 142198 675.13 890 894 209.3
C 2 16 120449 571.21 890 894 209.3
D 7 238 4181527 23166.65 752 730 180.5
D 2 250 250571 1384.42 752 730 180.5
D 1 52 241635 1334.9 752 730 180.5

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