ASTROSAT CZTI

Data Quality Report

Orbit 50753

Creation date: 2025-02-14T21:43:28.297682
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/AS1C07_001T01_9000006450_50753cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50753cztM0_level2_quad_clean.evt
Size (bytes)516,781,44093,556,800
Size492.8 MB 89.2 MB
Events in quadrant A5,053,829598,563
Events in quadrant B3,848,899670,335
Events in quadrant C4,552,328584,345
Events in quadrant D5,181,239535,672

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193591
B0158321
C0177552
D0197801

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63584416.936143%
B63582223.491664%
C63583275.143127%
D63584266.700220%

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 7458 6359 308 308 4.13% 4.84%
B 7458 6359 102 102 1.37% 1.60%
C 7458 6359 287 287 3.85% 4.51%
D 7457 6358 361 361 4.84% 5.68%

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 4 4 1223558 7168.68 684 665 170.6
A 3 114 223099 1303.92 684 665 170.6
A 4 3 210252 1228.61 684 665 170.6
B 0 213 233090 1596.91 690 664 145.5
B 10 247 200641 1373.97 690 664 145.5
B 7 0 198512 1359.34 690 664 145.5
C 15 198 486290 2673.29 672 667 181.7
C 5 10 481297 2645.81 672 667 181.7
C 13 3 302217 1660.0 672 667 181.7
D 2 216 750437 4030.12 664 642 186.0
D 15 93 502984 2700.07 664 642 186.0
D 2 249 311416 1670.4 664 642 186.0

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