ASTROSAT CZTI

Data Quality Report

Orbit 51278

Creation date: 2025-03-22T16:28:46.458845
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_51278cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51278cztM0_level2_quad_clean.evt
Size (bytes)719,282,88087,140,160
Size686.0 MB 83.1 MB
Events in quadrant A5,789,119608,060
Events in quadrant B4,438,369669,519
Events in quadrant C11,728,585358,609
Events in quadrant D4,175,488555,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217102
B0175812
C0392512
D0169732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63901682.629108%
B63902283.568075%
C6389297946.627015%
D63892453.834716%

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 7560 6391 108 108 1.43% 1.69%
B 7560 6391 162 162 2.14% 2.53%
C 7559 6389 3112 3112 41.17% 48.71%
D 7559 6390 229 229 3.03% 3.58%

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 2182574 13185.25 660 645 165.5
A 9 160 293349 1768.79 660 645 165.5
A 12 194 252440 1521.58 660 645 165.5
B 10 254 882729 6329.34 662 640 139.4
B 5 185 536209 3842.92 662 640 139.4
B 7 252 70114 498.5 662 640 139.4
C 4 12 6418356 44677.0 515 510 143.6
C 10 171 2707813 18846.54 515 510 143.6
C 1 45 221081 1535.48 515 510 143.6
D 8 176 483310 2686.87 636 613 179.7
D 3 12 390738 2171.58 636 613 179.7
D 12 2 214854 1192.55 636 613 179.7

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