ASTROSAT CZTI

Data Quality Report

Orbit 31376

Creation date: 2024-06-27T20:27:29.373372
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/AS1A10_064T05_9000004548_31376cztM0_level2.evt modeM0/AS1A10_064T05_9000004548_31376cztM0_level2_quad_clean.evt
Size (bytes)1,412,939,520176,803,200
Size1.3 GB 168.6 MB
Events in quadrant A6,619,9591,191,873
Events in quadrant B10,846,5021,183,713
Events in quadrant C16,462,927879,668
Events in quadrant D7,913,8431,127,291

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287853
B0427783
C0582843
D0331023

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14064550.391069%
B140642111.500284%
C14063492134.992534%
D140631200.853303%

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 16109 14067 0 0 0.00% 0.00%
B 16109 14067 7 7 0.04% 0.05%
C 16108 14065 3047 3047 18.92% 21.66%
D 16108 14066 49 49 0.30% 0.35%

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 13 254 24264 66.08 1713 1679 341.8
A 3 137 17738 46.99 1713 1679 341.8
A 0 226 14414 37.26 1713 1679 341.8
B 6 159 3840727 11879.26 1689 1645 323.2
B 0 190 161851 495.72 1689 1645 323.2
B 4 80 103974 316.63 1689 1645 323.2
C 3 233 10657441 34280.8 1331 1340 310.8
C 14 238 279003 893.25 1331 1340 310.8
C 10 22 98085 311.23 1331 1340 310.8
D 8 195 1305544 3308.81 1651 1604 394.1
D 13 249 139093 348.88 1651 1604 394.1
D 2 250 101329 253.06 1651 1604 394.1

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