ASTROSAT CZTI

Data Quality Report

Orbit 11388

Creation date: 2024-06-27T16:12:12.765667
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/AS1A04_022T03_9000001664_11388cztM0_level2.evt modeM0/AS1A04_022T03_9000001664_11388cztM0_level2_quad_clean.evt
Size (bytes)615,971,52088,770,240
Size587.4 MB 84.7 MB
Events in quadrant A3,227,764579,884
Events in quadrant B6,697,861479,394
Events in quadrant C3,144,626609,705
Events in quadrant D5,136,664557,585

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139493
B0241842
C0136442
D0197242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6612901.361162%
B6612136320.614035%
C6612630.952813%
D66124016.064731%

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 7727 6612 1 1 0.01% 0.02%
B 7727 6613 1083 1083 14.02% 16.38%
C 7727 6613 0 0 0.00% 0.00%
D 7727 6613 271 271 3.51% 4.10%

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 8 5 30415 177.56 825 809 166.7
A 0 226 7689 41.26 825 809 166.7
A 13 210 7508 40.18 825 809 166.7
B 4 81 2472489 17563.24 737 720 140.7
B 4 239 1115298 7919.67 737 720 140.7
B 11 51 106258 749.9 737 720 140.7
C 13 61 5772 26.51 805 810 187.1
C 14 234 3392 13.8 805 810 187.1
C 12 4 2167 7.25 805 810 187.1
D 1 52 789579 4204.18 784 764 187.6
D 10 253 542481 2887.21 784 764 187.6
D 2 14 334493 1778.69 784 764 187.6

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