ASTROSAT CZTI

Data Quality Report

Orbit 54670

Creation date: 2025-11-06T10:28:19.174064
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_066T07_9000006522_54670cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54670cztM0_level2_quad_clean.evt
Size (bytes)2,158,280,640342,377,280
Size2.0 GB 326.5 MB
Events in quadrant A14,501,0102,316,365
Events in quadrant B12,816,1142,511,923
Events in quadrant C20,200,7852,038,731
Events in quadrant D30,399,5831,740,149

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06208010
B0567682
C0778508
D01080282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05160
B05160
C05160
D05160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2555710424.077161%
B255596392.500098%
C25556283411.089372%
D25559591423.138620%

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 26439 25558 595 595 2.25% 2.33%
B 26439 25560 283 283 1.07% 1.11%
C 26439 25557 2400 2400 9.08% 9.39%
D 26439 25560 5172 5172 19.56% 20.23%

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 14 2075756 3103.27 2710 2636 668.0
A 11 3 1110077 1657.74 2710 2636 668.0
A 0 8 503800 750.2 2710 2636 668.0
B 2 249 1027683 1780.75 2691 2591 575.7
B 0 213 509194 880.05 2691 2591 575.7
B 10 247 432489 746.8 2691 2591 575.7
C 4 5 3882641 5625.18 2522 2504 689.8
C 9 38 2799238 4054.53 2522 2504 689.8
C 15 157 1474407 2133.87 2522 2504 689.8
D 11 129 19429813 28645.61 2392 2291 678.2
D 11 176 415614 609.44 2392 2291 678.2
D 2 62 369233 541.05 2392 2291 678.2

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