ASTROSAT CZTI

Data Quality Report

Orbit 21308

Creation date: 2024-06-27T18:26:11.874045
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_140T01_9000003142_21308cztM0_level2.evt modeM0/AS1T03_140T01_9000003142_21308cztM0_level2_quad_clean.evt
Size (bytes)472,587,84088,024,320
Size450.7 MB 83.9 MB
Events in quadrant A3,380,036573,427
Events in quadrant B3,351,005577,939
Events in quadrant C3,092,395550,337
Events in quadrant D4,071,437534,648

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139421
B0139671
C0131041
D0163811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61531081.755241%
B61541262.047449%
C61531462.372826%
D61531412.291565%

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 7343 6153 11 11 0.15% 0.18%
B 7344 6154 5 5 0.07% 0.08%
C 7343 6153 9 9 0.12% 0.15%
D 7343 6153 83 83 1.13% 1.35%

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 15 236 197550 1232.24 795 780 159.7
A 15 174 59447 367.39 795 780 159.7
A 9 143 47369 291.76 795 780 159.7
B 0 189 121537 802.87 789 770 150.4
B 3 64 44113 288.15 789 770 150.4
B 0 190 27340 176.64 789 770 150.4
C 14 238 118189 673.77 747 752 174.3
C 10 23 32842 184.11 747 752 174.3
C 0 10 25194 140.23 747 752 174.3
D 12 235 374287 2016.71 760 738 185.2
D 13 174 339717 1830.07 760 738 185.2
D 9 68 129013 692.53 760 738 185.2

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