ASTROSAT CZTI

Data Quality Report

Orbit 23852

Creation date: 2024-06-27T18:59:20.727980
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/AS1A07_001T06_9000003530_23852cztM0_level2.evt modeM0/AS1A07_001T06_9000003530_23852cztM0_level2_quad_clean.evt
Size (bytes)596,770,560169,188,480
Size569.1 MB 161.4 MB
Events in quadrant A4,127,3061,135,580
Events in quadrant B4,212,6801,154,023
Events in quadrant C4,437,9291,109,929
Events in quadrant D4,671,9871,088,190

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185291
B0185911
C0193611
D0198501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9182570.620780%
B9183730.794947%
C91831551.687902%
D9183800.871175%

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 9767 9183 0 0 0.00% 0.00%
B 9768 9184 0 0 0.00% 0.00%
C 9768 9184 26 26 0.27% 0.28%
D 9768 9184 28 28 0.29% 0.30%

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 13 254 15514 67.45 1068 1044 214.5
A 3 137 9408 38.99 1068 1044 214.5
A 0 226 9338 38.66 1068 1044 214.5
B 12 111 24240 115.32 1062 1036 201.2
B 11 111 21630 102.35 1062 1036 201.2
B 14 111 18104 84.82 1062 1036 201.2
C 0 10 260436 1097.95 1018 1024 236.3
C 14 238 161441 678.96 1018 1024 236.3
C 2 16 25163 102.17 1018 1024 236.3
D 1 52 391444 1540.64 1038 1008 253.4
D 8 195 213123 836.99 1038 1008 253.4
D 12 233 70519 274.29 1038 1008 253.4

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