ASTROSAT CZTI

Data Quality Report

Orbit 35362

Creation date: 2022-04-13T11:05:33.728397
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/AS1A11_099T01_9000005068_35362cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35362cztM0_level2_quad_clean.evt
Size (bytes)608,293,44044,568,000
Size580.1 MB 42.5 MB
Events in quadrant A2,782,492282,970
Events in quadrant B8,230,769165,871
Events in quadrant C3,133,198278,498
Events in quadrant D3,922,663255,612

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112053
B0280942
C0120692
D0152502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A521880.153315%
B5218219642.085090%
C52181593.047144%
D52181312.510540%

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 7221 5219 1 1 0.01% 0.02%
B 7221 5219 1697 1697 23.50% 32.52%
C 7221 5219 122 122 1.69% 2.34%
D 7221 5219 119 119 1.65% 2.28%

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 112127 820.62 678 667 135.8
A 15 169 25534 183.08 678 667 135.8
A 13 6 11682 81.1 678 667 135.8
B 4 251 5038117 48948.93 539 526 102.9
B 5 236 784527 7617.93 539 526 102.9
B 5 172 234774 2276.13 539 526 102.9
C 0 10 357856 2418.11 639 644 147.7
C 15 214 216350 1460.2 639 644 147.7
C 9 187 56311 376.83 639 644 147.7
D 8 195 794311 5040.68 641 624 157.5
D 12 233 299075 1895.45 641 624 157.5
D 2 250 84934 535.45 641 624 157.5

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