ASTROSAT CZTI

Data Quality Report

Orbit 51164

Creation date: 2025-03-15T08:35:02.158385
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_9000006454_51164cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51164cztM0_level2_quad_clean.evt
Size (bytes)890,968,32090,218,880
Size849.7 MB 86.0 MB
Events in quadrant A9,085,948592,795
Events in quadrant B4,881,085677,937
Events in quadrant C8,101,721553,608
Events in quadrant D10,364,428412,684

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320281
B0195501
C0290983
D0357931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7097122317.232634%
B70976308.876990%
C7097137019.303931%
D7097244634.465267%

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 7397 7097 1015 1015 13.72% 14.30%
B 7397 7097 353 353 4.77% 4.97%
C 7397 7097 1092 1092 14.76% 15.39%
D 7397 7097 2502 2502 33.82% 35.25%

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 2481339 13824.27 718 701 179.4
A 12 3 1468028 8177.22 718 701 179.4
A 14 254 973089 5418.99 718 701 179.4
B 5 185 591809 3756.07 727 700 157.4
B 10 60 515293 3269.87 727 700 157.4
B 8 128 199153 1261.03 727 700 157.4
C 4 12 2415084 13205.86 663 655 182.8
C 12 247 1542399 8432.66 663 655 182.8
C 13 3 317923 1735.31 663 655 182.8
D 8 176 6547872 36949.5 622 598 177.2
D 12 2 663566 3741.46 622 598 177.2
D 2 216 188276 1059.16 622 598 177.2

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