ASTROSAT CZTI

Data Quality Report

Orbit 52644

Creation date: 2025-06-23T14:32:42.725459
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_011T07_9000006480_52644cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52644cztM0_level2_quad_clean.evt
Size (bytes)95,451,8407,459,200
Size91.0 MB 7.1 MB
Events in quadrant A742,02249,188
Events in quadrant B478,33865,831
Events in quadrant C1,598,0991,021
Events in quadrant D658,71654,816

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026730
B018950
C052050
D024290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68116824.669604%
B681101.468429%
C68166096.916300%
D681507.342144%

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 680 680 154 154 22.65% 22.65%
B 681 681 7 7 1.03% 1.03%
C 680 680 602 602 88.53% 88.53%
D 681 681 54 54 7.93% 7.93%

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 9 429805 27222.59 54 52 15.8
A 4 249 27972 1768.59 54 52 15.8
A 3 14 15527 980.26 54 52 15.8
B 10 128 143683 9008.76 64 62 15.9
B 5 185 41802 2618.18 64 62 15.9
B 7 252 6137 381.06 64 62 15.9
C 15 178 1344970 212098.56 16 16 6.3
C 15 248 136914 21588.75 16 16 6.3
C 2 239 26585 4189.92 16 16 6.3
D 8 176 228946 11971.0 60 57 19.1
D 6 42 48616 2539.66 60 57 19.1
D 15 93 40335 2106.56 60 57 19.1

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