ASTROSAT CZTI

Data Quality Report

Orbit 21107

Creation date: 2024-06-27T18:23:39.221454
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/AS1A05_163T01_9000003118_21107cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21107cztM0_level2_quad_clean.evt
Size (bytes)579,116,16070,937,280
Size552.3 MB 67.7 MB
Events in quadrant A3,515,200441,134
Events in quadrant B4,961,150416,042
Events in quadrant C3,213,616425,269
Events in quadrant D5,393,773397,101

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147161
B0190891
C0137881
D0204061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6712801.191895%
B67126008.939213%
C6712981.460072%
D67125488.164482%

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 7302 6714 0 0 0.00% 0.00%
B 7302 6714 259 259 3.55% 3.86%
C 7302 6714 0 0 0.00% 0.00%
D 7302 6714 460 460 6.30% 6.85%

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 34 343729 2053.51 822 804 167.0
A 13 254 10215 56.36 822 804 167.0
A 0 226 6933 36.7 822 804 167.0
B 0 182 1700206 10947.88 803 783 155.2
B 7 220 34085 214.54 803 783 155.2
B 0 219 20316 125.83 803 783 155.2
C 14 238 122091 651.13 789 794 186.3
C 7 221 18461 94.84 789 794 186.3
C 13 61 5404 24.75 789 794 186.3
D 10 199 670160 3548.08 776 755 188.7
D 1 52 626167 3314.9 776 755 188.7
D 1 20 525111 2779.27 776 755 188.7

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