ASTROSAT CZTI

Data Quality Report

Orbit 45950

Creation date: 2024-06-27T23:18:04.402610
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/AS1A13_071T06_9000006146_45950cztM0_level2.fits modeM0/AS1A13_071T06_9000006146_45950cztM0_level2_quad_clean.evt
Size (bytes)824,552,64091,975,680
Size786.4 MB 87.7 MB
Events in quadrant A5,652,650694,418
Events in quadrant B10,293,456494,980
Events in quadrant C3,233,356693,007
Events in quadrant D10,847,391454,382

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213262
B0351041
C0142361
D0366421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64191131.760399%
B6420242337.741433%
C6420821.277259%
D6420215233.520249%

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 7519 6420 34 34 0.45% 0.53%
B 7520 6420 1905 1905 25.33% 29.67%
C 7520 6420 44 44 0.59% 0.69%
D 7519 6419 2464 2464 32.77% 38.39%

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 10 83 2781075 19024.84 700 683 146.1
A 0 247 112252 763.41 700 683 146.1
A 13 6 21323 141.23 700 683 146.1
B 3 112 7642468 61919.87 631 612 123.4
B 4 158 91718 738.21 631 612 123.4
B 5 172 26214 207.45 631 612 123.4
C 12 250 220172 1337.78 699 704 164.1
C 14 254 179299 1088.63 699 704 164.1
C 2 14 48298 290.11 699 704 164.1
D 2 37 7521904 47192.33 629 609 159.4
D 11 241 433098 2713.65 629 609 159.4
D 12 2 135343 845.39 629 609 159.4

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