ASTROSAT CZTI

Data Quality Report

Orbit 50923

Creation date: 2025-03-19T14:16:24.223343
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/AS1C07_001T01_9000006450_50923cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50923cztM0_level2_quad_clean.evt
Size (bytes)2,430,008,640208,788,480
Size2.3 GB 199.1 MB
Events in quadrant A39,689,262631,583
Events in quadrant B9,916,9031,842,403
Events in quadrant C21,496,5201,223,348
Events in quadrant D17,386,6771,316,704

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310213
B0435343
C0766963
D0652303

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189621279767.487607%
B189624282.257146%
C18961505726.670534%
D18961277214.619482%

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 20347 18962 11962 11962 58.79% 63.08%
B 20347 18964 235 235 1.15% 1.24%
C 20346 18962 3923 3923 19.28% 20.69%
D 20346 18962 2661 2661 13.08% 14.03%

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 14 254 26006966 78634.75 1296 1260 330.7
A 4 4 6145220 18577.8 1296 1260 330.7
A 8 249 394802 1189.97 1296 1260 330.7
B 2 249 468712 1123.82 1968 1895 415.4
B 10 44 344662 825.18 1968 1895 415.4
B 4 170 288993 691.17 1968 1895 415.4
C 4 210 5762541 12376.14 1661 1643 465.5
C 5 10 1914989 4110.44 1661 1643 465.5
C 12 247 1615290 3466.6 1661 1643 465.5
D 15 184 3308039 6547.83 1789 1727 504.9
D 2 249 1319305 2609.34 1789 1727 504.9
D 8 176 772815 1527.07 1789 1727 504.9

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