ASTROSAT CZTI

Data Quality Report

Orbit 43773

Creation date: 2024-06-27T22:55:36.381830
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_026T01_9000005904_43773cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43773cztM0_level2_quad_clean.evt
Size (bytes)677,289,60097,591,680
Size645.9 MB 93.1 MB
Events in quadrant A5,273,094686,214
Events in quadrant B5,634,339674,818
Events in quadrant C6,540,463620,946
Events in quadrant D7,109,231509,513

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204371
B0212381
C0239701
D0256552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66363294.957806%
B663672510.925256%
C663698314.813140%
D6635142921.537302%

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 7531 6637 202 202 2.68% 3.04%
B 7531 6637 485 485 6.44% 7.31%
C 7531 6637 863 863 11.46% 13.00%
D 7530 6636 1221 1221 16.22% 18.40%

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 954049 6246.55 733 719 152.6
A 14 63 526255 3443.5 733 719 152.6
A 15 223 380169 2486.29 733 719 152.6
B 0 200 1306047 9234.74 722 702 141.4
B 3 96 388381 2742.66 722 702 141.4
B 7 205 372698 2631.71 722 702 141.4
C 15 174 2822013 17169.54 696 699 164.3
C 15 158 435929 2648.66 696 699 164.3
C 14 254 231387 1403.89 696 699 164.3
D 5 235 1749541 10492.65 651 629 166.7
D 12 33 1708223 10244.76 651 629 166.7
D 13 249 226956 1357.86 651 629 166.7

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