ASTROSAT CZTI

Data Quality Report

Orbit 58124

Creation date: 2026-06-29T13:14:44.984996
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_58124cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58124cztM0_level2_quad_clean.evt
Size (bytes)965,620,80092,350,080
Size920.9 MB 88.1 MB
Events in quadrant A3,572,853774,952
Events in quadrant B9,958,241629,485
Events in quadrant C3,869,014731,168
Events in quadrant D17,732,148112,406

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164191
B0349941
C0174361
D0579311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7889340.430980%
B7889202925.719356%
C7889510.646470%
D7889675485.612879%

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 7904 7890 2 2 0.03% 0.03%
B 7904 7890 1322 1322 16.73% 16.76%
C 7904 7890 32 32 0.40% 0.41%
D 7904 7889 6286 6286 79.53% 79.68%

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 11 3 43744 192.69 891 867 222.5
A 10 251 31599 138.11 891 867 222.5
A 4 3 24470 106.07 891 867 222.5
B 10 128 3397217 20088.68 783 750 169.1
B 5 172 2707415 16008.79 783 750 169.1
B 10 247 187247 1103.05 783 750 169.1
C 6 223 234665 999.97 855 846 233.8
C 15 208 112079 475.71 855 846 233.8
C 9 38 78393 331.64 855 846 233.8
D 12 110 15369112 106326.07 503 482 144.5
D 8 160 131878 909.05 503 482 144.5
D 8 240 73906 507.98 503 482 144.5

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