ASTROSAT CZTI

Data Quality Report

Orbit 20038

Creation date: 2024-06-27T18:10:26.576362
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_180T01_9000002986_20038cztM0_level2.evt modeM0/AS1A05_180T01_9000002986_20038cztM0_level2_quad_clean.evt
Size (bytes)553,754,880126,172,800
Size528.1 MB 120.3 MB
Events in quadrant A3,927,364844,615
Events in quadrant B3,955,101839,414
Events in quadrant C3,873,217807,811
Events in quadrant D4,492,287793,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165542
B0166312
C0162882
D0186122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76981141.480904%
B76991501.948305%
C76991922.493830%
D76992553.312118%

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 7933 7699 12 12 0.15% 0.16%
B 7934 7700 3 3 0.04% 0.04%
C 7934 7700 0 0 0.00% 0.00%
D 7934 7700 142 142 1.79% 1.84%

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 14 238 90566 446.02 984 967 200.9
A 14 254 26350 126.36 984 967 200.9
A 10 253 13820 63.98 984 967 200.9
B 7 220 48326 251.9 976 955 188.1
B 4 80 29049 149.39 976 955 188.1
B 12 111 22368 113.87 976 955 188.1
C 14 238 147408 652.81 947 958 224.3
C 8 128 14515 60.43 947 958 224.3
C 3 233 8128 31.96 947 958 224.3
D 1 52 845901 3583.2 950 925 235.8
D 2 234 32124 132.3 950 925 235.8
D 8 195 29543 121.36 950 925 235.8

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