ASTROSAT CZTI

Data Quality Report

Orbit 25682

Creation date: 2024-06-27T19:20:21.579903
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/AS1A09_043T01_9000003744_25682cztM0_level2.evt modeM0/AS1A09_043T01_9000003744_25682cztM0_level2_quad_clean.evt
Size (bytes)580,913,28080,360,640
Size554.0 MB 76.6 MB
Events in quadrant A4,108,385486,538
Events in quadrant B3,783,357495,742
Events in quadrant C3,739,270468,845
Events in quadrant D5,446,622453,307

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166850
B0158650
C0158480
D0212740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75941942.554648%
B75951882.475313%
C75952052.699144%
D75952783.660303%

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 8714 7595 14 14 0.16% 0.18%
B 8715 7597 0 0 0.00% 0.00%
C 8715 7596 3 3 0.03% 0.04%
D 8715 7597 141 141 1.62% 1.86%

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 8 192 332803 1719.7 956 937 193.0
A 0 13 88130 451.83 956 937 193.0
A 13 254 10549 49.81 956 937 193.0
B 3 112 25765 135.46 951 925 183.4
B 12 111 23039 120.6 951 925 183.4
B 11 111 20556 107.06 951 925 183.4
C 14 238 144100 662.57 914 920 216.1
C 14 225 22831 101.39 914 920 216.1
C 3 233 9195 38.29 914 920 216.1
D 1 52 1005841 4464.93 919 893 225.1
D 8 195 521624 2313.58 919 893 225.1
D 2 244 188321 832.73 919 893 225.1

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