ASTROSAT CZTI

Data Quality Report

Orbit 26475

Creation date: 2024-06-27T19:29:29.152004
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_104T02_9000003826_26475cztM0_level2.evt modeM0/AS1A09_104T02_9000003826_26475cztM0_level2_quad_clean.evt
Size (bytes)560,465,28093,530,880
Size534.5 MB 89.2 MB
Events in quadrant A3,267,482640,446
Events in quadrant B3,330,059652,310
Events in quadrant C4,092,535602,096
Events in quadrant D5,869,693510,527

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135140
B0137400
C0161600
D0215210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6119741.209348%
B6119931.519856%
C61193004.902762%
D611896015.691402%

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 7479 6120 0 0 0.00% 0.00%
B 7479 6120 2 2 0.03% 0.03%
C 7479 6120 93 93 1.24% 1.52%
D 7478 6119 772 772 10.32% 12.62%

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 13 254 10279 55.9 846 832 169.0
A 0 226 7462 39.23 846 832 169.0
A 3 137 7234 37.88 846 832 169.0
B 4 200 23599 144.93 839 824 157.1
B 12 111 18122 110.08 839 824 157.1
B 11 111 16163 97.61 839 824 157.1
C 2 16 503603 2730.83 791 801 184.1
C 3 233 276521 1497.5 791 801 184.1
C 14 238 127234 686.69 791 801 184.1
D 7 80 1513356 8465.37 746 726 178.7
D 1 52 1308821 7320.7 746 726 178.7
D 11 176 121348 675.05 746 726 178.7

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