ASTROSAT CZTI

Data Quality Report

Orbit 28482

Creation date: 2024-06-27T19:52:15.441301
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/AS1A10_110T04_9000004094_28482cztM0_level2.evt modeM0/AS1A10_110T04_9000004094_28482cztM0_level2_quad_clean.evt
Size (bytes)773,686,08076,754,880
Size737.8 MB 73.2 MB
Events in quadrant A4,424,465473,781
Events in quadrant B8,070,380463,087
Events in quadrant C3,735,848460,243
Events in quadrant D6,737,192448,621

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174122
B0285862
C0152342
D0247042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68562974.331972%
B6857192128.015167%
C68572052.989646%
D685782912.089835%

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 7881 6856 214 214 2.72% 3.12%
B 7881 6856 1649 1649 20.92% 24.05%
C 7882 6857 90 90 1.14% 1.31%
D 7881 6856 914 914 11.60% 13.33%

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 15 174 1048552 6003.03 871 852 174.5
A 13 254 10944 57.82 871 852 174.5
A 1 113 9136 47.47 871 852 174.5
B 10 245 5127415 36185.29 740 720 141.7
B 12 111 17245 116.64 740 720 141.7
B 11 111 16020 107.99 740 720 141.7
C 7 238 238502 1225.42 833 839 193.9
C 14 238 136741 700.72 833 839 193.9
C 7 247 101210 517.52 833 839 193.9
D 8 195 2330961 11732.53 831 810 198.6
D 1 52 733121 3687.26 831 810 198.6
D 2 250 163662 819.98 831 810 198.6

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