ASTROSAT CZTI

Data Quality Report

Orbit 40545

Creation date: 2024-06-27T22:17:22.755262
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/AS1A12_011T26_9000005548_40545cztM0_level2.fits modeM0/AS1A12_011T26_9000005548_40545cztM0_level2_quad_clean.evt
Size (bytes)344,992,32083,701,440
Size329.0 MB 79.8 MB
Events in quadrant A2,785,767582,074
Events in quadrant B2,413,245598,662
Events in quadrant C2,700,103566,878
Events in quadrant D4,466,167422,959

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114523
B0105362
C0112662
D0168182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5192100.192604%
B519270.134823%
C5192470.905239%
D5192113121.783513%

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 7015 5193 2 2 0.03% 0.04%
B 7015 5193 0 0 0.00% 0.00%
C 7015 5193 46 46 0.66% 0.89%
D 7015 5193 418 418 5.96% 8.05%

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 467798 3996.9 572 561 116.9
A 12 189 80331 682.38 572 561 116.9
A 6 10 14589 120.0 572 561 116.9
B 3 112 101602 911.31 568 552 110.9
B 0 230 29066 257.15 568 552 110.9
B 7 202 25415 224.22 568 552 110.9
C 14 254 253691 1943.09 552 555 130.3
C 15 214 229030 1753.79 552 555 130.3
C 0 10 24045 180.31 552 555 130.3
D 12 227 2096114 16893.67 497 484 124.0
D 2 250 188597 1516.45 497 484 124.0
D 12 191 164295 1320.54 497 484 124.0

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