ASTROSAT CZTI

Data Quality Report

Orbit 20385

Creation date: 2024-06-27T18:14:43.783483
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/AS1A05_205T01_9000003012_20385cztM0_level2.evt modeM0/AS1A05_205T01_9000003012_20385cztM0_level2_quad_clean.evt
Size (bytes)627,721,92097,367,040
Size598.6 MB 92.9 MB
Events in quadrant A4,249,450599,627
Events in quadrant B4,499,845603,697
Events in quadrant C4,460,867580,567
Events in quadrant D5,210,007560,709

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183702
B0188282
C0188802
D0214562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86974164.783259%
B86974865.588134%
C86984825.541504%
D86985956.840653%

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 9017 8701 0 0 0.00% 0.00%
B 9017 8700 14 14 0.16% 0.16%
C 9018 8702 0 0 0.00% 0.00%
D 9018 8702 154 154 1.71% 1.77%

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 13 210 24615 105.79 1094 1068 222.6
A 3 137 9547 38.09 1094 1068 222.6
A 11 29 9438 37.6 1094 1068 222.6
B 7 220 152678 710.71 1089 1057 213.3
B 0 198 35873 163.2 1089 1057 213.3
B 12 111 26599 119.73 1089 1057 213.3
C 3 233 181872 721.55 1053 1058 250.6
C 14 238 161720 641.13 1053 1058 250.6
C 13 61 7366 25.17 1053 1058 250.6
D 1 52 1044433 4039.39 1064 1034 258.3
D 2 234 42461 160.38 1064 1034 258.3
D 1 20 33282 124.84 1064 1034 258.3

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