ASTROSAT CZTI

Data Quality Report

Orbit 54415

Creation date: 2025-10-19T12:19:58.803281
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/AS1A14_126T19_9000006518_54415cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54415cztM0_level2_quad_clean.evt
Size (bytes)724,008,96083,923,200
Size690.5 MB 80.0 MB
Events in quadrant A3,290,331646,177
Events in quadrant B3,853,425680,734
Events in quadrant C10,799,470309,119
Events in quadrant D8,344,542443,974

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148671
B0164241
C0367961
D0293531

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6613380.574626%
B66132343.538485%
C6613338351.156812%
D6613160224.225011%

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 7743 6614 27 27 0.35% 0.41%
B 7743 6613 132 132 1.70% 2.00%
C 7743 6613 3402 3402 43.94% 51.44%
D 7743 6613 1638 1638 21.15% 24.77%

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 7 206 470610 2688.11 700 683 174.8
A 7 237 40525 227.91 700 683 174.8
A 4 3 27746 154.81 700 683 174.8
B 5 185 660124 4485.9 688 665 147.0
B 7 0 133076 900.71 688 665 147.0
B 10 247 110007 743.79 688 665 147.0
C 4 5 5852905 40836.95 519 514 143.3
C 1 241 1240731 8654.02 519 514 143.3
C 5 10 1064462 7424.04 519 514 143.3
D 15 108 2416710 14244.95 589 562 169.6
D 7 70 2301697 13566.86 589 562 169.6
D 8 176 660346 3889.91 589 562 169.6

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