ASTROSAT CZTI

Data Quality Report

Orbit 52623

Creation date: 2025-06-24T12:19:48.200137
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/AS1C09_011T06_9000006478_52623cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52623cztM0_level2_quad_clean.evt
Size (bytes)965,113,92073,267,200
Size920.4 MB 69.9 MB
Events in quadrant A3,919,652595,081
Events in quadrant B7,767,485616,132
Events in quadrant C15,970,35583,911
Events in quadrant D7,574,519476,988

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159921
B0276071
C0517728
D0269981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63972483.876817%
B63974456.956386%
C6396561287.742339%
D6396106616.666667%

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 7252 6398 156 156 2.15% 2.44%
B 7252 6398 248 248 3.42% 3.88%
C 7251 6396 5234 5234 72.18% 81.83%
D 7251 6397 911 911 12.56% 14.24%

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 8 246 290457 1745.78 661 645 166.0
A 12 3 175449 1052.99 661 645 166.0
A 3 110 159983 959.82 661 645 166.0
B 10 254 4417908 31837.48 647 624 138.7
B 10 247 227267 1633.52 647 624 138.7
B 0 213 99336 711.46 647 624 138.7
C 15 248 14742437 209841.92 244 241 70.3
C 1 44 89458 1269.92 244 241 70.3
C 15 224 43772 619.62 244 241 70.3
D 6 42 1443821 8102.06 613 584 178.1
D 2 37 944173 5297.13 613 584 178.1
D 8 176 816866 4582.45 613 584 178.1

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