ASTROSAT CZTI

Data Quality Report

Orbit 50768

Creation date: 2025-02-15T22:35:38.789345
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_9000006450_50768cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50768cztM0_level2_quad_clean.evt
Size (bytes)597,919,68093,214,080
Size570.2 MB 88.9 MB
Events in quadrant A4,816,968621,673
Events in quadrant B4,862,116665,769
Events in quadrant C4,889,514581,322
Events in quadrant D7,067,035505,536

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187012
B0189291
C0188471
D0254471

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64232934.561731%
B64234597.146193%
C64243775.868618%
D642498315.301993%

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 7558 6424 146 146 1.93% 2.27%
B 7558 6424 252 252 3.33% 3.92%
C 7559 6425 270 270 3.57% 4.20%
D 7559 6425 802 802 10.61% 12.48%

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 4 4 1175410 6815.03 697 680 172.4
A 3 114 165280 954.9 697 680 172.4
A 4 3 123512 712.59 697 680 172.4
B 4 206 1559219 10602.32 689 664 147.0
B 7 0 136840 926.36 689 664 147.0
B 10 247 96761 653.71 689 664 147.0
C 10 171 391908 2149.45 673 668 182.0
C 0 145 299535 1641.96 673 668 182.0
C 15 231 292092 1601.06 673 668 182.0
D 2 216 1571192 8712.48 643 621 180.3
D 7 125 729232 4041.85 643 621 180.3
D 15 174 292284 1617.95 643 621 180.3

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