ASTROSAT CZTI

Data Quality Report

Orbit 17779

Creation date: 2024-06-27T17:40:47.851404
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_015T01_9000002650_17779cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17779cztM0_level2_quad_clean.evt
Size (bytes)507,824,64091,846,080
Size484.3 MB 87.6 MB
Events in quadrant A3,318,713574,922
Events in quadrant B3,521,840588,419
Events in quadrant C3,919,012557,160
Events in quadrant D4,128,472557,071

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148531
B0152611
C0163321
D0174391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72262162.989206%
B72272243.099488%
C72273454.773765%
D72273765.202712%

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 7241 7227 0 0 0.00% 0.00%
B 7242 7228 8 8 0.11% 0.11%
C 7242 7228 75 75 1.04% 1.04%
D 7242 7228 183 183 2.53% 2.53%

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 0 226 7561 38.37 861 842 175.1
A 3 137 6485 32.22 861 842 175.1
A 12 194 6425 31.88 861 842 175.1
B 7 220 88534 532.09 859 838 164.8
B 0 230 35673 211.36 859 838 164.8
B 12 111 20137 117.09 859 838 164.8
C 4 254 509540 2633.44 819 821 193.2
C 14 238 126105 648.55 819 821 193.2
C 5 218 61224 312.68 819 821 193.2
D 7 238 781984 3945.69 824 803 198.0
D 10 70 77898 389.4 824 803 198.0
D 7 38 69354 346.25 824 803 198.0

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