ASTROSAT CZTI

Data Quality Report

Orbit 36401

Creation date: 2022-06-22T15:09:40.684178
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/AS1T04_084T01_9000005198_36401cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36401cztM0_level2_quad_clean.evt
Size (bytes)439,318,08062,565,120
Size419.0 MB 59.7 MB
Events in quadrant A2,626,036386,156
Events in quadrant B3,846,398388,560
Events in quadrant C2,705,237385,799
Events in quadrant D3,765,255360,538

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110252
B0148931
C0111491
D0147451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A533150.093791%
B53312995.608704%
C5331380.712812%
D53312795.233540%

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 7005 5332 0 0 0.00% 0.00%
B 7005 5332 186 186 2.66% 3.49%
C 7005 5332 22 22 0.31% 0.41%
D 7005 5332 252 252 3.60% 4.73%

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 150083 1182.04 624 609 126.5
A 15 223 42143 328.45 624 609 126.5
A 12 189 12454 93.67 624 609 126.5
B 5 172 682069 5787.83 607 591 117.7
B 5 255 427543 3626.13 607 591 117.7
B 0 189 174753 1479.17 607 591 117.7
C 15 214 225297 1605.03 600 605 140.0
C 0 10 73554 521.09 600 605 140.0
C 0 207 64933 459.51 600 605 140.0
D 12 6 639261 4359.31 596 578 146.5
D 12 227 182266 1240.11 596 578 146.5
D 13 171 123036 835.83 596 578 146.5

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