ASTROSAT CZTI

Data Quality Report

Orbit 51057

Creation date: 2025-03-07T12:08:07.168679
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_001T02_9000006452_51057cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51057cztM0_level2_quad_clean.evt
Size (bytes)963,149,76077,074,560
Size918.5 MB 73.5 MB
Events in quadrant A7,341,187599,932
Events in quadrant B4,211,906667,163
Events in quadrant C8,330,241503,813
Events in quadrant D15,242,62987,294

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266812
B0173922
C0294552
D0499646

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68135588.190225%
B68133475.093204%
C6813147721.679143%
D6812592086.905461%

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 7858 6814 478 478 6.08% 7.01%
B 7858 6814 222 222 2.83% 3.26%
C 7858 6814 1534 1534 19.52% 22.51%
D 7857 6813 4759 4759 60.57% 69.85%

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 12 3 1413846 8351.54 682 667 169.2
A 10 253 602867 3558.85 682 667 169.2
A 4 249 562108 3317.98 682 667 169.2
B 4 171 582215 3945.85 691 667 147.4
B 4 81 189410 1280.64 691 667 147.4
B 5 185 122230 824.81 691 667 147.4
C 4 12 3685954 21114.84 626 620 174.5
C 12 247 865707 4956.45 626 620 174.5
C 12 2 261215 1493.06 626 620 174.5
D 8 176 13021069 184280.73 244 235 70.7
D 15 9 475904 6732.03 244 235 70.7
D 10 172 169418 2394.41 244 235 70.7

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