ASTROSAT CZTI

Data Quality Report

Orbit 37346

Creation date: 2024-06-27T21:38:48.154180
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_014T01_9000005314_37346cztM0_level2.evt modeM0/AS1C07_014T01_9000005314_37346cztM0_level2_quad_clean.evt
Size (bytes)471,107,52085,176,000
Size449.3 MB 81.2 MB
Events in quadrant A2,822,408571,392
Events in quadrant B3,026,394590,979
Events in quadrant C3,698,973553,240
Events in quadrant D4,380,759513,021

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113853
B0120462
C0141092
D0165832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5000340.680000%
B50001543.080000%
C50002444.880000%
D50002625.240000%

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 7033 5000 21 21 0.30% 0.42%
B 7033 5001 90 90 1.28% 1.80%
C 7033 5001 192 192 2.73% 3.84%
D 7033 5001 253 253 3.60% 5.06%

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 265665 2144.22 618 609 123.6
A 15 237 56541 452.47 618 609 123.6
A 9 143 47852 382.18 618 609 123.6
B 5 172 304177 2573.01 619 607 118.0
B 5 255 144267 1217.64 619 607 118.0
B 0 190 55553 465.71 619 607 118.0
C 1 23 719219 5203.51 590 598 138.1
C 14 254 403168 2914.99 590 598 138.1
C 15 214 207613 1498.99 590 598 138.1
D 12 235 1194392 8349.19 584 570 143.0
D 12 227 632893 4422.26 584 570 143.0
D 13 249 103666 721.02 584 570 143.0

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