ASTROSAT CZTI

Data Quality Report

Orbit 30127

Creation date: 2024-06-27T20:11:15.593068
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_097T01_9000004334_30127cztM0_level2.evt modeM0/AS1A10_097T01_9000004334_30127cztM0_level2_quad_clean.evt
Size (bytes)710,709,120105,514,560
Size677.8 MB 100.6 MB
Events in quadrant A3,918,731681,441
Events in quadrant B6,014,833673,909
Events in quadrant C6,860,889645,743
Events in quadrant D4,213,358662,583

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166851
B0236981
C0259691
D0172563

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76403204.188482%
B76414045.287266%
C76415587.302709%
D76402242.931937%

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 7655 7641 34 34 0.44% 0.44%
B 7656 7642 18 18 0.24% 0.24%
C 7656 7642 21 21 0.27% 0.27%
D 7655 7641 16 16 0.21% 0.21%

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 0 13 296714 1577.32 938 915 187.5
A 13 254 12643 62.54 938 915 187.5
A 3 137 9704 46.87 938 915 187.5
B 6 159 2163656 12167.42 915 888 177.8
B 4 171 98955 551.71 915 888 177.8
B 0 190 83189 463.01 915 888 177.8
C 3 233 3153060 14905.68 894 900 211.5
C 14 238 145086 681.81 894 900 211.5
C 10 20 37169 171.51 894 900 211.5
D 8 195 282751 1258.62 921 898 223.9
D 12 227 156638 695.46 921 898 223.9
D 13 104 99856 441.9 921 898 223.9

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