ASTROSAT CZTI

Data Quality Report

Orbit 27112

Creation date: 2024-06-27T19:36:38.396751
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/AS1T03_244T01_9000003912_27112cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27112cztM0_level2_quad_clean.evt
Size (bytes)644,495,04092,465,280
Size614.6 MB 88.2 MB
Events in quadrant A4,383,993623,652
Events in quadrant B3,218,441649,201
Events in quadrant C3,214,583613,609
Events in quadrant D8,287,443485,364

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168930
B0132700
C0132420
D0288700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61302484.045677%
B6130510.831974%
C6130891.451876%
D6129148924.294338%

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 7480 6131 195 195 2.61% 3.18%
B 7480 6131 3 3 0.04% 0.05%
C 7480 6131 4 4 0.05% 0.07%
D 7479 6130 1517 1517 20.28% 24.75%

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 14 235 1275301 8128.23 797 784 156.8
A 8 192 17396 105.94 797 784 156.8
A 12 189 11897 70.87 797 784 156.8
B 3 112 26797 173.08 807 787 150.3
B 12 111 17348 110.21 807 787 150.3
B 11 111 15544 98.2 807 787 150.3
C 14 238 125420 687.34 782 791 181.3
C 15 208 26950 144.27 782 791 181.3
C 3 233 7755 38.4 782 791 181.3
D 1 52 4984518 27294.09 696 686 182.6
D 7 38 403781 2207.56 696 686 182.6
D 2 250 173795 948.04 696 686 182.6

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