ASTROSAT CZTI

Data Quality Report

Orbit 51369

Creation date: 2025-03-28T11:17:26.709346
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_001T03_9000006456_51369cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51369cztM0_level2_quad_clean.evt
Size (bytes)1,021,973,76091,336,320
Size974.6 MB 87.1 MB
Events in quadrant A6,947,285725,531
Events in quadrant B4,793,721832,028
Events in quadrant C16,450,4033,678
Events in quadrant D8,991,130624,937

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263640
B0203221
C0545870
D0325960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83385746.884145%
B83372242.686818%
C8337831099.676142%
D8337124414.921435%

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 8338 8338 448 448 5.37% 5.37%
B 8337 8337 120 120 1.44% 1.44%
C 8336 8336 3864 3864 46.35% 46.35%
D 8337 8337 1036 1036 12.43% 12.43%

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 15 174 1284400 6149.71 839 816 208.7
A 12 3 1236917 5922.21 839 816 208.7
A 4 175 183285 874.22 839 816 208.7
B 5 185 515393 2790.07 866 836 184.4
B 4 206 211874 1144.31 866 836 184.4
B 8 234 147563 795.59 866 836 184.4
C 15 179 12474264 184999.81 242 241 67.4
C 4 12 1528478 22664.99 242 241 67.4
C 0 177 1190916 17658.67 242 241 67.4
D 11 176 3842331 17535.84 789 761 219.1
D 2 153 415695 1894.07 789 761 219.1
D 10 172 407980 1858.86 789 761 219.1

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