ASTROSAT CZTI

Data Quality Report

Orbit 54699

Creation date: 2025-11-13T15:51:11.926018
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_066T07_9000006522_54699cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54699cztM0_level2_quad_clean.evt
Size (bytes)2,045,989,440353,102,400
Size1.9 GB 336.7 MB
Events in quadrant A14,677,8102,371,063
Events in quadrant B22,064,7652,375,955
Events in quadrant C14,286,6932,227,644
Events in quadrant D22,705,5391,934,018

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0619903
B0835052
C0614392
D0862062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05220
B05220
C05220
D05220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A259144791.848422%
B2591423939.234391%
C259145502.122405%
D25914314012.117002%

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 27039 26193 209 209 0.77% 0.80%
B 27039 26193 1645 1645 6.08% 6.28%
C 27039 26190 338 338 1.25% 1.29%
D 27039 26147 2856 2856 10.56% 10.92%

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 7 190 2272619 3359.89 2728 2661 675.6
A 11 3 839242 1238.27 2728 2661 675.6
A 3 14 501849 738.88 2728 2661 675.6
B 2 249 8642264 15296.71 2631 2534 564.8
B 7 0 2347391 4151.59 2631 2534 564.8
B 0 213 414156 728.78 2631 2534 564.8
C 15 157 1578333 2188.52 2637 2620 720.0
C 6 223 574694 794.56 2637 2620 720.0
C 14 254 363728 501.55 2637 2620 720.0
D 11 129 7723490 10676.89 2535 2420 723.2
D 2 62 1713279 2365.82 2535 2420 723.2
D 3 12 1168186 1612.05 2535 2420 723.2

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