ASTROSAT CZTI

Data Quality Report

Orbit 54322

Creation date: 2025-10-13T07:10:06.674280
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_126T15_9000006516_54322cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54322cztM0_level2_quad_clean.evt
Size (bytes)772,176,96098,668,800
Size736.4 MB 94.1 MB
Events in quadrant A4,191,577720,289
Events in quadrant B3,586,253774,239
Events in quadrant C6,383,707609,337
Events in quadrant D13,826,014348,945

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01602
B01580
C01657
D01591

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018379364
B016593332
C024867328
D046980606

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0173
C0140
D0162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76842142.785008%
B7686500.650533%
C7683110614.395418%
D7678382549.817661%

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 10067 7692 145 145 1.44% 1.89%
B 9043 7693 7 7 0.08% 0.09%
C 9044 7690 970 970 10.73% 12.61%
D 9039 7685 3327 3327 36.81% 43.29%

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 29 571499 2817.88 813 792 202.5
A 0 8 214376 1054.57 813 792 202.5
A 11 3 94312 461.76 813 792 202.5
B 0 213 107598 613.04 812 780 174.2
B 0 171 62395 353.62 812 780 174.2
B 10 247 47130 266.01 812 780 174.2
C 1 241 2729894 13292.2 748 741 205.3
C 14 254 221173 1073.6 748 741 205.3
C 15 157 95162 459.87 748 741 205.3
D 8 176 4537763 27082.6 583 556 167.5
D 15 108 4367529 26066.47 583 556 167.5
D 2 172 2032643 12129.53 583 556 167.5

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