ASTROSAT CZTI

Data Quality Report

Orbit 51152

Creation date: 2025-03-22T09:32:16.372243
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_51152cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51152cztM0_level2_quad_clean.evt
Size (bytes)817,136,64093,389,760
Size779.3 MB 89.1 MB
Events in quadrant A6,353,149667,912
Events in quadrant B4,150,242718,777
Events in quadrant C13,405,904373,426
Events in quadrant D5,782,696566,617

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238620
B0174060
C0447310
D0221690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71882092.907624%
B71891762.448185%
C7189344347.892614%
D71896679.278064%

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 7188 7188 127 127 1.77% 1.77%
B 7189 7189 100 100 1.39% 1.39%
C 7188 7188 3405 3405 47.37% 47.37%
D 7189 7189 556 556 7.73% 7.73%

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 80 1627916 8614.13 754 735 188.9
A 12 3 998861 5283.98 754 735 188.9
A 7 29 163531 861.83 754 735 188.9
B 5 185 295627 1838.54 746 719 160.4
B 4 171 206343 1281.92 746 719 160.4
B 10 247 165847 1029.46 746 719 160.4
C 12 247 7667213 45879.48 611 608 167.1
C 4 12 1281679 7666.35 611 608 167.1
C 4 13 508306 3038.23 611 608 167.1
D 12 2 1200256 6027.59 706 682 199.0
D 7 126 720797 3618.42 706 682 199.0
D 3 12 125810 628.74 706 682 199.0

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