ASTROSAT CZTI

Data Quality Report

Orbit 18833

Creation date: 2024-06-27T17:55:25.029609
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/AS1A05_173T01_9000002812_18833cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18833cztM0_level2_quad_clean.evt
Size (bytes)528,595,20082,846,080
Size504.1 MB 79.0 MB
Events in quadrant A3,339,396529,986
Events in quadrant B3,433,644535,453
Events in quadrant C3,296,019508,105
Events in quadrant D5,501,360484,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135341
B0138071
C0134291
D0205661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64671001.546312%
B6468871.345083%
C6468871.345083%
D64684837.467532%

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 7527 6469 3 3 0.04% 0.05%
B 7528 6470 2 2 0.03% 0.03%
C 7528 6470 1 1 0.01% 0.02%
D 7528 6470 390 390 5.18% 6.03%

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 4 2 38745 221.34 847 831 171.3
A 8 205 14394 79.18 847 831 171.3
A 13 254 11025 59.51 847 831 171.3
B 7 220 45197 278.27 836 817 159.5
B 0 229 29770 181.54 836 817 159.5
B 4 216 29393 179.18 836 817 159.5
C 14 238 124733 662.15 799 805 187.2
C 0 207 25998 134.61 799 805 187.2
C 5 112 15948 80.91 799 805 187.2
D 7 238 1659010 8485.47 803 781 195.4
D 7 38 493304 2520.33 803 781 195.4
D 1 52 267434 1364.51 803 781 195.4

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