ASTROSAT CZTI

Data Quality Report

Orbit 12496

Creation date: 2024-06-27T16:28:13.556881
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/AS1A04_174T01_9000001850_12496cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12496cztM0_level2_quad_clean.evt
Size (bytes)711,596,16096,871,680
Size678.6 MB 92.4 MB
Events in quadrant A5,727,603586,680
Events in quadrant B5,087,848585,262
Events in quadrant C4,214,934604,025
Events in quadrant D5,938,608561,193

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228163
B0204642
C0181722
D0231732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85995806.744970%
B85997718.966159%
C85992833.291080%
D85996567.628794%

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 8755 8602 55 55 0.63% 0.64%
B 8755 8606 222 222 2.54% 2.58%
C 8755 8606 0 0 0.00% 0.00%
D 8755 8606 247 247 2.82% 2.87%

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 8 15 536909 2387.59 1083 1058 224.4
A 1 162 289491 1285.17 1083 1058 224.4
A 12 189 196374 870.27 1083 1058 224.4
B 4 239 765214 3627.02 1081 1053 210.7
B 0 214 55168 256.85 1081 1053 210.7
B 12 111 24623 111.87 1081 1053 210.7
C 13 61 7987 27.56 1079 1085 250.4
C 14 234 6519 21.7 1079 1085 250.4
C 8 222 3602 10.05 1079 1085 250.4
D 1 52 1678371 6610.21 1039 1007 253.8
D 13 104 141511 553.7 1039 1007 253.8
D 10 157 65717 255.01 1039 1007 253.8

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