ASTROSAT CZTI

Data Quality Report

Orbit 44227

Creation date: 2024-06-27T23:00:43.354220
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/AS1A13_071T06_9000005972_44227cztM0_level2.fits modeM0/AS1A13_071T06_9000005972_44227cztM0_level2_quad_clean.evt
Size (bytes)500,659,200110,926,080
Size477.5 MB 105.8 MB
Events in quadrant A6,670,749697,829
Events in quadrant B3,921,685790,028
Events in quadrant C3,237,604758,015
Events in quadrant D4,213,036672,549

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244186
B0158752
C0138832
D0168232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A630685813.606089%
B63061943.076435%
C63061211.918807%
D63063325.264827%

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 7520 6306 510 510 6.78% 8.09%
B 7521 6307 43 43 0.57% 0.68%
C 7521 6307 22 22 0.29% 0.35%
D 7521 6307 193 193 2.57% 3.06%

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 15 223 1987076 13230.45 728 716 150.1
A 10 83 1572470 10468.91 728 716 150.1
A 10 248 274605 1824.28 728 716 150.1
B 0 200 439459 2965.78 765 744 147.9
B 5 172 80081 536.33 765 744 147.9
B 0 219 70930 474.47 765 744 147.9
C 4 254 148852 835.3 759 766 177.3
C 14 254 79211 442.48 759 766 177.3
C 3 233 27002 147.99 759 766 177.3
D 5 222 445597 2381.5 745 724 186.8
D 1 52 370029 1976.97 745 724 186.8
D 13 249 247602 1321.59 745 724 186.8

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