ASTROSAT CZTI

Data Quality Report

Orbit 08458

Creation date: 2024-06-27T15:32:59.753195
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/AS1A03_074T01_9000001192_08458cztM0_level2.evt modeM0/AS1A03_074T01_9000001192_08458cztM0_level2_quad_clean.evt
Size (bytes)587,813,76093,519,360
Size560.6 MB 89.2 MB
Events in quadrant A4,185,711551,951
Events in quadrant B4,484,438554,390
Events in quadrant C4,128,594566,331
Events in quadrant D4,408,651551,611

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01833723
B01898325
C01833024
D01907920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87413684.210045%
B87414405.033749%
C87413083.523624%
D87433313.785886%

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 8975 8754 0 0 0.00% 0.00%
B 8975 8753 17 17 0.19% 0.19%
C 8975 8754 0 0 0.00% 0.00%
D 8975 8754 13 13 0.14% 0.15%

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 13 251 18702 79.47 1084 1058 222.0
A 0 226 9937 39.99 1084 1058 222.0
A 12 194 9805 39.39 1084 1058 222.0
B 0 214 136861 646.98 1079 1052 209.9
B 11 51 57234 267.64 1079 1052 209.9
B 4 48 55676 260.22 1079 1052 209.9
C 13 61 7891 27.78 1055 1056 246.0
C 8 222 6499 22.12 1055 1056 246.0
C 7 221 3680 10.67 1055 1056 246.0
D 2 152 203767 798.08 1056 1025 254.0
D 11 129 66324 257.05 1056 1025 254.0
D 2 14 50592 195.12 1056 1025 254.0

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