ASTROSAT CZTI

Data Quality Report

Orbit 27218

Creation date: 2024-06-27T19:37:51.197331
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/AS1T03_243T01_9000003918_27218cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27218cztM0_level2_quad_clean.evt
Size (bytes)639,408,960113,135,040
Size609.8 MB 107.9 MB
Events in quadrant A4,414,644720,529
Events in quadrant B4,386,632735,722
Events in quadrant C4,279,964698,046
Events in quadrant D5,688,845662,926

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187240
B0185500
C0183060
D0229690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87621561.780415%
B87631882.145384%
C87631892.156796%
D87636026.869793%

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 9177 8766 5 5 0.05% 0.06%
B 9178 8767 2 2 0.02% 0.02%
C 9178 8767 4 4 0.04% 0.05%
D 9178 8767 433 433 4.72% 4.94%

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 14 235 100761 452.23 1092 1067 220.4
A 15 174 43929 194.43 1092 1067 220.4
A 13 248 23423 101.41 1092 1067 220.4
B 15 33 70747 327.55 1091 1062 212.7
B 12 111 26023 117.33 1091 1062 212.7
B 11 111 23026 103.24 1091 1062 212.7
C 14 238 165342 667.58 1042 1048 246.1
C 15 208 37689 148.88 1042 1048 246.1
C 13 61 7074 24.49 1042 1048 246.1
D 1 52 1366748 5331.41 1026 1004 256.2
D 2 250 148669 576.43 1026 1004 256.2
D 12 233 77122 297.14 1026 1004 256.2

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