ASTROSAT CZTI

Data Quality Report

Orbit 07246

Creation date: 2024-06-27T15:17:17.784967
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/AS1G05_246T03_9000000990_07246cztM0_level2.evt modeM0/AS1G05_246T03_9000000990_07246cztM0_level2_quad_clean.evt
Size (bytes)520,542,72070,580,160
Size496.4 MB 67.3 MB
Events in quadrant A3,146,084421,855
Events in quadrant B3,383,530424,829
Events in quadrant C4,884,977416,218
Events in quadrant D3,895,991407,211

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138183
B0146032
C0193972
D0163942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6698390.582263%
B6698831.239176%
C6698570.851000%
D66981842.747089%

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 7664 6699 0 0 0.00% 0.00%
B 7664 6699 24 24 0.31% 0.36%
C 7664 6699 1 1 0.01% 0.01%
D 7664 6699 92 92 1.20% 1.37%

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 8 15 66406 400.98 797 780 163.7
A 0 226 7797 42.87 797 780 163.7
A 12 194 6946 37.67 797 780 163.7
B 10 245 69160 442.21 799 777 154.6
B 15 85 53170 338.81 799 777 154.6
B 0 214 51178 325.93 799 777 154.6
C 9 68 1864600 10325.84 773 775 180.5
C 13 61 5957 28.71 773 775 180.5
C 10 22 2722 10.79 773 775 180.5
D 2 33 268584 1389.33 774 749 192.8
D 2 14 220290 1138.81 774 749 192.8
D 2 216 201945 1043.65 774 749 192.8

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