ASTROSAT CZTI

Data Quality Report

Orbit 58143

Creation date: 2026-06-29T23:52:17.615375
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_042T02_9000006586_58143cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58143cztM0_level2_quad_clean.evt
Size (bytes)2,292,013,440230,944,320
Size2.1 GB 220.2 MB
Events in quadrant A9,717,0711,826,578
Events in quadrant B37,248,435762,256
Events in quadrant C9,521,0651,759,354
Events in quadrant D26,840,9501,290,660

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03980
B03980
C03980
D03980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0432933
B01243063
C0428653
D0932848

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A196395052.571414%
B196391261064.208972%
C196381920.977696%
D19638438922.349526%

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 20719 19643 223 223 1.08% 1.14%
B 20719 19641 10876 10876 52.49% 55.37%
C 20719 19643 89 89 0.43% 0.45%
D 20719 19642 4201 4201 20.28% 21.39%

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 0 24 817411 1535.38 2163 2101 531.0
A 11 3 163998 304.88 2163 2101 531.0
A 13 248 158997 295.46 2163 2101 531.0
B 10 128 31126002 108234.28 1347 1294 287.6
B 5 185 289293 1001.5 1347 1294 287.6
B 7 252 58513 198.98 1347 1294 287.6
C 13 3 375978 655.13 2111 2095 570.7
C 12 252 300083 522.15 2111 2095 570.7
C 12 250 229576 398.6 2111 2095 570.7
D 12 110 14735590 27332.42 1906 1823 539.1
D 8 160 2535659 4700.49 1906 1823 539.1
D 8 240 876465 1622.54 1906 1823 539.1

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