ASTROSAT CZTI

Data Quality Report

Orbit 54099

Creation date: 2025-09-28T06:32:30.820686
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_54099cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54099cztM0_level2_quad_clean.evt
Size (bytes)751,429,440100,918,080
Size716.6 MB 96.2 MB
Events in quadrant A3,942,407741,575
Events in quadrant B9,291,639627,074
Events in quadrant C7,704,029543,091
Events in quadrant D6,272,880601,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174611
B0331541
C0285631
D0242432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77941081.385681%
B7794193224.788299%
C7794176822.684116%
D77947389.468822%

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 8354 7795 54 54 0.65% 0.69%
B 8354 7795 1324 1324 15.85% 16.99%
C 8354 7795 1505 1505 18.02% 19.31%
D 8354 7795 636 636 7.61% 8.16%

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 185271 900.16 828 809 204.9
A 8 246 167251 812.23 828 809 204.9
A 0 8 64725 311.91 828 809 204.9
B 5 250 5126273 31185.03 768 738 164.4
B 15 20 218509 1324.97 768 738 164.4
B 0 213 209841 1272.23 768 738 164.4
C 1 241 3683165 19219.21 698 692 191.6
C 13 3 889789 4640.29 698 692 191.6
C 1 16 146029 758.53 698 692 191.6
D 8 176 1651323 7435.23 779 745 222.0
D 15 78 683651 3076.23 779 745 222.0
D 12 153 213562 958.66 779 745 222.0

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