ASTROSAT CZTI

Data Quality Report

Orbit 28804

Creation date: 2024-06-27T19:56:34.330280
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_121T01_9000004134_28804cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28804cztM0_level2_quad_clean.evt
Size (bytes)601,594,560112,334,400
Size573.7 MB 107.1 MB
Events in quadrant A3,282,811753,106
Events in quadrant B3,605,625790,465
Events in quadrant C4,485,159727,857
Events in quadrant D6,429,452700,955

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135321
B0145611
C0174981
D0233691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6158290.470932%
B61591612.614061%
C61594948.020783%
D61595438.816366%

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 7484 6160 2 2 0.03% 0.03%
B 7485 6161 95 95 1.27% 1.54%
C 7485 6160 179 179 2.39% 2.91%
D 7485 6161 468 468 6.25% 7.60%

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 148181 930.7 797 782 158.4
A 1 113 23068 140.72 797 782 158.4
A 13 254 11981 70.71 797 782 158.4
B 5 172 319992 2194.0 802 784 145.5
B 5 255 45267 305.74 802 784 145.5
B 15 35 30679 205.48 802 784 145.5
C 4 254 913305 5063.85 778 786 180.2
C 3 233 298663 1653.01 778 786 180.2
C 14 238 167531 925.32 778 786 180.2
D 1 52 2092433 11447.79 773 753 182.7
D 13 104 592435 3238.28 773 753 182.7
D 8 195 568645 3108.08 773 753 182.7

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