ASTROSAT CZTI

Data Quality Report

Orbit 21388

Creation date: 2024-06-27T18:27:11.335554
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/AS1C04_001T01_9000003156_21388cztM0_level2.evt modeM0/AS1C04_001T01_9000003156_21388cztM0_level2_quad_clean.evt
Size (bytes)562,953,60086,575,680
Size536.9 MB 82.6 MB
Events in quadrant A3,424,440559,857
Events in quadrant B3,142,691570,667
Events in quadrant C6,764,940493,752
Events in quadrant D3,270,683537,866

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141471
B0135091
C0246301
D0142681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6582741.124278%
B6583500.759532%
C658395714.537445%
D6583490.744341%

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 6582 26 26 0.35% 0.40%
B 7528 6583 1 1 0.01% 0.02%
C 7528 6583 536 536 7.12% 8.14%
D 7528 6583 22 22 0.29% 0.33%

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 263422 1686.93 778 760 155.7
A 5 168 145724 931.02 778 760 155.7
A 13 254 9784 57.96 778 760 155.7
B 10 249 24778 163.42 778 758 147.0
B 0 230 22538 148.18 778 758 147.0
B 12 111 17800 115.94 778 758 147.0
C 3 233 3890095 23457.69 709 712 165.8
C 14 238 109952 658.85 709 712 165.8
C 13 61 4891 25.2 709 712 165.8
D 12 235 187999 1026.3 755 732 182.5
D 15 145 60076 325.23 755 732 182.5
D 1 52 57062 308.71 755 732 182.5

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