ASTROSAT CZTI

Data Quality Report

Orbit 45468

Creation date: 2024-06-27T23:12:37.784407
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/AS1A13_038T04_9000006090_45468cztM0_level2.fits modeM0/AS1A13_038T04_9000006090_45468cztM0_level2_quad_clean.evt
Size (bytes)1,215,106,560293,834,880
Size1.1 GB 280.2 MB
Events in quadrant A15,162,3601,913,406
Events in quadrant B9,436,5331,989,272
Events in quadrant C8,378,0411,933,158
Events in quadrant D10,522,5721,743,398

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0586262
B0412452
C0393798
D0441102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191166723.515380%
B191176463.379191%
C191143511.836350%
D191165592.924252%

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 20161 19118 7 7 0.03% 0.04%
B 20162 19119 102 102 0.51% 0.53%
C 20162 19117 25 25 0.12% 0.13%
D 20161 19118 144 144 0.71% 0.75%

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 10 83 6782542 15281.17 2130 2081 443.7
A 13 248 58287 126.67 2130 2081 443.7
A 13 210 44429 95.44 2130 2081 443.7
B 15 201 446120 1053.1 2125 2057 421.7
B 5 172 192092 450.67 2125 2057 421.7
B 3 112 111288 259.04 2125 2057 421.7
C 14 254 81521 162.44 2100 2111 488.8
C 3 233 37110 71.59 2100 2111 488.8
C 1 3 22122 40.93 2100 2111 488.8
D 1 52 712648 1362.38 2093 2027 521.6
D 11 241 547809 1046.35 2093 2027 521.6
D 13 249 398887 760.85 2093 2027 521.6

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