ASTROSAT CZTI

Data Quality Report

Orbit 28484

Creation date: 2024-06-27T19:52:16.359343
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_110T04_9000004094_28484cztM0_level2.evt modeM0/AS1A10_110T04_9000004094_28484cztM0_level2_quad_clean.evt
Size (bytes)701,167,68066,530,880
Size668.7 MB 63.4 MB
Events in quadrant A3,993,305400,063
Events in quadrant B8,306,839385,565
Events in quadrant C3,609,870388,217
Events in quadrant D4,879,476381,042

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162411
B0291931
C0148111
D0191271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65922183.307039%
B6592209831.826456%
C65921231.865898%
D65922934.444782%

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 7742 6592 135 135 1.74% 2.05%
B 7742 6592 1732 1732 22.37% 26.27%
C 7742 6592 0 0 0.00% 0.00%
D 7741 6591 181 181 2.34% 2.75%

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 15 174 586053 3355.65 880 865 174.4
A 13 254 11247 59.53 880 865 174.4
A 3 137 8241 42.3 880 865 174.4
B 10 245 5438651 40535.81 716 699 134.2
B 10 246 32037 233.6 716 699 134.2
B 12 111 16310 116.37 716 699 134.2
C 14 238 140688 705.72 853 860 198.1
C 7 247 107991 540.7 853 860 198.1
C 3 233 39061 192.8 853 860 198.1
D 1 52 823031 4054.45 856 836 202.8
D 8 195 296339 1457.2 856 836 202.8
D 2 250 196905 966.86 856 836 202.8

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