ASTROSAT CZTI

Data Quality Report

Orbit 54069

Creation date: 2025-09-26T11:13:38.801968
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_041T01_9000006510_54069cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54069cztM0_level2_quad_clean.evt
Size (bytes)537,059,520101,226,240
Size512.2 MB 96.5 MB
Events in quadrant A3,723,044682,503
Events in quadrant B4,090,909735,627
Events in quadrant C6,435,944567,983
Events in quadrant D5,071,260577,358

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164553
B0173853
C0242403
D0203703

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71941141.584654%
B71942223.085905%
C7193102914.305575%
D71934816.687057%

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 7684 7195 68 68 0.88% 0.95%
B 7684 7194 103 103 1.34% 1.43%
C 7683 7194 971 971 12.64% 13.50%
D 7683 7195 439 439 5.71% 6.10%

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 15 174 309105 1649.49 753 735 186.9
A 12 115 214262 1142.17 753 735 186.9
A 4 3 67478 357.01 753 735 186.9
B 5 236 426401 2649.83 754 728 160.6
B 7 252 198531 1231.33 754 728 160.6
B 15 20 149261 924.62 754 728 160.6
C 15 233 2508624 13394.15 678 672 187.2
C 4 5 846703 4518.37 678 672 187.2
C 13 3 177038 941.91 678 672 187.2
D 8 176 929698 4580.9 716 683 202.8
D 2 172 353069 1737.59 716 683 202.8
D 14 20 324542 1596.92 716 683 202.8

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