ASTROSAT CZTI

Data Quality Report

Orbit 13477

Creation date: 2024-06-27T16:41:23.540257
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_103T01_9000001988_13477cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13477cztM0_level2_quad_clean.evt
Size (bytes)347,855,04073,992,960
Size331.7 MB 70.6 MB
Events in quadrant A2,422,350478,928
Events in quadrant B2,472,816488,776
Events in quadrant C2,414,152471,993
Events in quadrant D2,882,654448,543

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134432927
B0138033236
C0134243002
D0151173094

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013030
B012927
C012927
D013028

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0135
C0122
D0123

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5055470.929773%
B5023571.134780%
C5025260.517413%
D5028741.471758%

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 7178 5204 0 0 0.00% 0.00%
B 7155 5177 1 1 0.01% 0.02%
C 7130 5177 0 0 0.00% 0.00%
D 7119 5174 71 71 1.00% 1.37%

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 1 162 12077 90.81 625 613 126.2
A 0 226 5584 39.38 625 613 126.2
A 12 194 4756 32.82 625 613 126.2
B 0 214 30892 256.63 621 605 118.0
B 12 111 13248 107.13 621 605 118.0
B 0 230 12307 99.15 621 605 118.0
C 3 233 68362 487.59 601 604 139.0
C 13 61 4394 27.27 601 604 139.0
C 14 220 2221 11.64 601 604 139.0
D 12 110 423852 3028.51 591 576 139.8
D 13 249 145068 1033.83 591 576 139.8
D 13 122 55987 396.46 591 576 139.8

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