ASTROSAT CZTI

Data Quality Report

Orbit 07839

Creation date: 2024-06-27T15:24:38.752283
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/AS1G06_077T02_9000001076_07839cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07839cztM0_level2_quad_clean.evt
Size (bytes)1,912,639,680354,343,680
Size1.8 GB 337.9 MB
Events in quadrant A13,036,5432,209,082
Events in quadrant B14,314,0862,249,028
Events in quadrant C14,502,3432,246,055
Events in quadrant D14,217,6642,141,211

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0575996
B0603505
C0616735
D0614085

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05580
B05580
C05580
D05580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A274515812.116498%
B274517682.797712%
C274515331.941641%
D274515822.120141%

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 30071 27456 86 86 0.29% 0.31%
B 30071 27457 222 222 0.74% 0.81%
C 30071 27457 151 151 0.50% 0.55%
D 30071 27457 221 221 0.73% 0.80%

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 0 128 380263 573.2 3263 3197 657.8
A 8 6 41792 58.67 3263 3197 657.8
A 0 226 30560 41.6 3263 3197 657.8
B 4 239 951288 1515.2 3290 3215 625.7
B 0 219 140438 219.31 3290 3215 625.7
B 4 173 121457 188.97 3290 3215 625.7
C 1 16 1919007 2595.54 3198 3222 738.1
C 8 229 75767 98.28 3198 3222 738.1
C 13 61 24771 29.19 3198 3222 738.1
D 2 152 599805 771.23 3188 3093 773.7
D 2 136 528169 678.64 3188 3093 773.7
D 13 137 255555 326.3 3188 3093 773.7

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