ASTROSAT CZTI

Data Quality Report

Orbit 35675

Creation date: 2022-05-04T14:52:28.366008
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_029T02_9000005106_35675cztM0_level2.evt modeM0/AS1A09_029T02_9000005106_35675cztM0_level2_quad_clean.evt
Size (bytes)572,299,200101,039,040
Size545.8 MB 96.4 MB
Events in quadrant A3,347,648652,429
Events in quadrant B5,239,162639,010
Events in quadrant C3,826,943653,596
Events in quadrant D4,436,994620,248

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144563
B0202222
C0155102
D0179012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7100110.154930%
B71005017.056338%
C71001452.042254%
D71002273.197183%

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 9725 7102 0 0 0.00% 0.00%
B 9725 7102 360 360 3.70% 5.07%
C 9725 7102 92 92 0.95% 1.30%
D 9725 7102 179 179 1.84% 2.52%

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 10 83 163624 988.01 812 795 164.8
A 15 169 30555 180.57 812 795 164.8
A 13 6 11927 67.54 812 795 164.8
B 5 172 1448172 9485.47 786 766 152.6
B 5 31 450252 2945.67 786 766 152.6
B 5 255 136902 892.16 786 766 152.6
C 15 214 290804 1597.93 784 789 181.5
C 0 10 286081 1571.91 784 789 181.5
C 9 187 171265 939.29 784 789 181.5
D 13 249 951515 4996.35 784 761 190.3
D 10 118 70888 368.52 784 761 190.3
D 1 47 70136 364.57 784 761 190.3

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