ASTROSAT CZTI

Data Quality Report

Orbit 20079

Creation date: 2024-06-27T18:11:00.941836
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_180T01_9000002992_20079cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20079cztM0_level2_quad_clean.evt
Size (bytes)522,740,160112,104,000
Size498.5 MB 106.9 MB
Events in quadrant A3,942,845737,103
Events in quadrant B3,864,003739,304
Events in quadrant C3,700,021708,190
Events in quadrant D3,834,178708,083

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160582
B0157342
C0151712
D0159782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72112333.231175%
B72111732.399112%
C72111882.607128%
D72121602.218525%

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 9086 7213 45 45 0.50% 0.62%
B 9086 7213 0 0 0.00% 0.00%
C 9086 7213 0 0 0.00% 0.00%
D 9087 7214 23 23 0.25% 0.32%

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 14 238 239657 1253.0 947 931 190.5
A 11 29 18195 90.61 947 931 190.5
A 4 2 12730 61.93 947 931 190.5
B 0 183 47341 261.0 942 921 177.9
B 10 245 34003 186.01 942 921 177.9
B 0 189 24028 129.92 942 921 177.9
C 14 238 142273 663.71 910 920 213.0
C 13 61 6208 24.83 910 920 213.0
C 3 233 4514 16.88 910 920 213.0
D 7 238 93268 405.11 931 906 228.0
D 1 52 91372 396.79 931 906 228.0
D 12 218 83237 361.11 931 906 228.0

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