ASTROSAT CZTI

Data Quality Report

Orbit 42643

Creation date: 2024-06-27T22:42:33.798152
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_174T01_9000005820_42643cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42643cztM0_level2_quad_clean.evt
Size (bytes)627,684,480137,738,880
Size598.6 MB 131.4 MB
Events in quadrant A8,248,442852,497
Events in quadrant B4,087,180965,115
Events in quadrant C4,278,610919,607
Events in quadrant D5,947,981830,738

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304482
B0181812
C0181112
D0238572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A867498511.355776%
B8675210.242075%
C8675210.242075%
D86753043.504323%

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 11780 8676 800 800 6.79% 9.22%
B 11781 8677 9 9 0.08% 0.10%
C 11781 8677 10 10 0.08% 0.12%
D 11781 8677 300 300 2.55% 3.46%

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 13 248 3911284 20661.04 917 900 189.3
A 10 83 737761 3893.3 917 900 189.3
A 2 79 31268 160.45 917 900 189.3
B 0 245 187292 1006.57 942 913 185.2
B 3 112 124818 669.17 942 913 185.2
B 0 168 48142 255.07 942 913 185.2
C 15 214 351631 1616.31 934 939 217.0
C 3 233 146793 672.23 934 939 217.0
C 14 254 109281 499.34 934 939 217.0
D 2 249 879560 3875.28 919 893 226.7
D 13 249 845592 3725.47 919 893 226.7
D 12 6 324216 1425.99 919 893 226.7

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