ASTROSAT CZTI

Data Quality Report

Orbit 31234

Creation date: 2024-06-27T20:25:23.087093
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/AS1C06_002T02_9000004518_31234cztM0_level2.evt modeM0/AS1C06_002T02_9000004518_31234cztM0_level2_quad_clean.evt
Size (bytes)645,776,64085,933,440
Size615.9 MB 82.0 MB
Events in quadrant A3,197,882562,361
Events in quadrant B6,742,023535,307
Events in quadrant C4,008,575529,008
Events in quadrant D5,168,359520,588

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135762
B0244912
C0160022
D0201574

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6515420.644666%
B651577811.941673%
C65152593.975441%
D65141191.826835%

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 7625 6516 1 1 0.01% 0.02%
B 7625 6516 446 446 5.85% 6.84%
C 7625 6516 68 68 0.89% 1.04%
D 7624 6515 35 35 0.46% 0.54%

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 12 96 16678 96.55 824 808 164.4
A 13 254 12451 70.83 824 808 164.4
A 3 137 7831 42.73 824 808 164.4
B 6 159 1758051 12063.89 775 756 145.7
B 14 167 864434 5929.18 775 756 145.7
B 4 80 838669 5752.3 775 756 145.7
C 0 10 323873 1812.88 767 770 178.2
C 3 233 296164 1657.41 767 770 178.2
C 10 22 212384 1187.33 767 770 178.2
D 8 195 1905815 9583.55 780 764 198.8
D 2 250 174264 872.81 780 764 198.8
D 13 249 41131 203.07 780 764 198.8

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