ASTROSAT CZTI

Data Quality Report

Orbit 30740

Creation date: 2024-06-27T20:19:04.346891
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_071T11_9000004436_30740cztM0_level2.evt modeM0/AS1A10_071T11_9000004436_30740cztM0_level2_quad_clean.evt
Size (bytes)1,581,315,840222,675,840
Size1.5 GB 212.4 MB
Events in quadrant A8,457,4271,440,311
Events in quadrant B14,151,0821,420,879
Events in quadrant C9,101,2551,375,130
Events in quadrant D14,992,2031,290,399

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365684
B0550684
C0382334
D0564194

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A176611180.668139%
B176614832.734839%
C176613421.936470%
D176619405.322462%

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 19651 17662 1 1 0.01% 0.01%
B 19651 17661 169 169 0.86% 0.96%
C 19651 17661 51 51 0.26% 0.29%
D 19651 17663 787 787 4.00% 4.46%

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 32994 70.82 2178 2134 435.8
A 0 13 24439 51.19 2178 2134 435.8
A 3 137 21996 45.58 2178 2134 435.8
B 6 159 4961523 12043.62 2138 2083 411.8
B 5 255 480133 1160.91 2138 2083 411.8
B 5 172 185472 445.34 2138 2083 411.8
C 3 233 521684 1063.24 2078 2087 488.7
C 14 238 336909 685.14 2078 2087 488.7
C 2 114 41950 81.57 2078 2087 488.7
D 8 195 5288207 10057.11 2050 2013 525.6
D 13 249 1135486 2156.46 2050 2013 525.6
D 10 253 457342 866.27 2050 2013 525.6

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