ASTROSAT CZTI

Data Quality Report

Orbit 01177

Creation date: 2024-06-27T14:08:42.532373
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/AS1P01_997T02_9000000218_01177cztM0_level2.evt modeM0/AS1P01_997T02_9000000218_01177cztM0_level2_quad_clean.evt
Size (bytes)1,354,380,480105,148,800
Size1.3 GB 100.3 MB
Events in quadrant A8,674,712709,480
Events in quadrant B9,319,171702,612
Events in quadrant C8,773,156677,331
Events in quadrant D13,773,156590,577

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309271
B0327700
C0312090
D0462430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A723620.027640%
B7236570.787728%
C723650.069099%
D7236161622.332781%

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 7236 7236 286 286 3.95% 3.95%
B 7236 7236 429 429 5.93% 5.93%
C 7236 7236 290 290 4.01% 4.01%
D 7236 7236 3177 3177 43.91% 43.91%

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 13 9 12591 18.9 2255 2272 546.0
A 11 79 9792 13.77 2255 2272 546.0
A 12 243 8966 12.26 2255 2272 546.0
B 5 191 194087 348.11 2330 2344 550.8
B 6 53 111419 198.02 2330 2344 550.8
B 15 22 28891 48.2 2330 2344 550.8
C 15 241 334953 557.79 2130 2205 596.5
C 9 83 39725 62.9 2130 2205 596.5
C 3 79 39555 62.61 2130 2205 596.5
D 1 239 5896774 9939.78 1922 1995 593.0
D 13 252 393961 660.93 1922 1995 593.0
D 14 50 144330 240.01 1922 1995 593.0

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