ASTROSAT CZTI

Data Quality Report

Orbit 04173

Creation date: 2024-06-27T14:38:23.032793
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/AS1G05_240T01_9000000536_04173cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04173cztM0_level2_quad_clean.evt
Size (bytes)599,241,60082,739,520
Size571.5 MB 78.9 MB
Events in quadrant A4,555,986481,674
Events in quadrant B4,429,418484,321
Events in quadrant C3,957,859476,269
Events in quadrant D4,618,900463,307

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193266
B01899211
C0177813
D02011515

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86411591.840065%
B86401371.585648%
C8642780.902569%
D86371952.257728%

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 9222 8645 23 23 0.25% 0.27%
B 9222 8645 22 22 0.24% 0.25%
C 9222 8646 0 0 0.00% 0.00%
D 9222 8645 97 97 1.05% 1.12%

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 3 1 310321 1467.3 1023 999 210.8
A 15 234 177033 835.04 1023 999 210.8
A 0 50 95119 446.47 1023 999 210.8
B 7 252 103272 511.01 1037 1011 200.1
B 15 204 98690 488.12 1037 1011 200.1
B 8 3 89021 439.8 1037 1011 200.1
C 8 128 27429 112.72 997 1001 234.5
C 9 144 11399 44.35 997 1001 234.5
C 8 112 11346 44.12 997 1001 234.5
D 2 232 475389 1949.17 991 958 243.4
D 13 239 179362 732.96 991 958 243.4
D 12 233 79468 322.55 991 958 243.4

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