ASTROSAT CZTI

Data Quality Report

Orbit 26573

Creation date: 2024-06-27T19:30:35.979875
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_095T02_9000003846_26573cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26573cztM0_level2_quad_clean.evt
Size (bytes)1,978,064,640292,570,560
Size1.8 GB 279.0 MB
Events in quadrant A8,984,7132,040,490
Events in quadrant B10,923,7632,059,216
Events in quadrant C12,241,0401,975,145
Events in quadrant D26,535,6841,533,705

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0383200
B0440090
C0481130
D0911950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181401710.942668%
B181415062.789262%
C1814012016.620728%
D18140664136.609702%

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 21850 18141 49 49 0.22% 0.27%
B 21851 18141 294 294 1.35% 1.62%
C 21850 18140 634 634 2.90% 3.50%
D 21850 18141 5868 5868 26.86% 32.35%

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 6 16 180126 400.97 2239 2191 443.8
A 0 13 148790 330.36 2239 2191 443.8
A 13 254 28503 59.29 2239 2191 443.8
B 3 64 1582144 3842.9 2199 2146 411.1
B 3 112 473858 1147.31 2199 2146 411.1
B 0 245 107205 255.53 2199 2146 411.1
C 4 254 3152966 6492.81 2113 2126 485.3
C 3 233 446734 916.19 2113 2126 485.3
C 14 238 340402 697.07 2113 2126 485.3
D 7 80 13200131 30816.57 1790 1740 428.3
D 1 52 4534891 10584.33 1790 1740 428.3
D 12 233 1620479 3779.55 1790 1740 428.3

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