ASTROSAT CZTI

Data Quality Report

Orbit 09822

Creation date: 2024-06-27T15:51:18.276062
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/AS1G07_035T01_9000001396_09822cztM0_level2.evt modeM0/AS1G07_035T01_9000001396_09822cztM0_level2_quad_clean.evt
Size (bytes)600,606,720112,394,880
Size572.8 MB 107.2 MB
Events in quadrant A4,234,118707,975
Events in quadrant B4,338,081712,853
Events in quadrant C4,105,027689,586
Events in quadrant D4,892,521660,989

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020022
B020012
C020016
D02008

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200971430
B0202921515
C0200111414
D0222111922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9135981.072797%
B91131331.459454%
C9138900.984898%
D90311231.361975%

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 10797 9723 1 1 0.01% 0.01%
B 10797 9727 1 1 0.01% 0.01%
C 10797 9726 0 0 0.00% 0.00%
D 10797 9663 20 20 0.19% 0.21%

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 1 162 24261 103.39 1088 1063 224.4
A 0 226 9832 39.08 1088 1063 224.4
A 13 248 9474 37.49 1088 1063 224.4
B 0 85 37387 172.48 1086 1059 210.6
B 12 111 24394 110.79 1086 1059 210.6
B 11 111 20126 90.53 1086 1059 210.6
C 13 61 7823 27.47 1050 1054 246.4
C 10 22 6815 23.38 1050 1054 246.4
C 9 54 4328 13.29 1050 1054 246.4
D 5 113 474057 1760.84 1029 1003 268.7
D 2 152 200397 742.2 1029 1003 268.7
D 1 52 159397 589.59 1029 1003 268.7

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