ASTROSAT CZTI

Data Quality Report

Orbit 07355

Creation date: 2024-06-27T15:18:54.270422
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/AS1G06_157T02_9000001008_07355cztM0_level2.evt modeM0/AS1G06_157T02_9000001008_07355cztM0_level2_quad_clean.evt
Size (bytes)687,683,52088,992,000
Size655.8 MB 84.9 MB
Events in quadrant A3,211,308582,782
Events in quadrant B3,329,574601,958
Events in quadrant C3,980,074589,011
Events in quadrant D9,824,446425,746

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146793
B0148612
C0163592
D0339792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7104460.647523%
B7104590.830518%
C7104410.577140%
D7104246734.726914%

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 7984 7105 1 1 0.01% 0.01%
B 7984 7105 0 0 0.00% 0.00%
C 7984 7105 0 0 0.00% 0.00%
D 7984 7105 2419 2419 30.30% 34.05%

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 15 239 34239 199.09 824 805 167.9
A 0 226 7808 41.7 824 805 167.9
A 12 194 7134 37.69 824 805 167.9
B 0 214 50082 304.14 839 816 162.0
B 4 81 28147 168.73 839 816 162.0
B 12 111 16824 98.83 839 816 162.0
C 9 68 807404 4280.18 807 812 188.4
C 12 80 8093 38.64 807 812 188.4
C 10 22 6608 30.76 807 812 188.4
D 1 52 7048133 46629.27 614 594 151.1
D 14 34 316640 2091.08 614 594 151.1
D 12 233 72076 472.95 614 594 151.1

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