ASTROSAT CZTI

Data Quality Report

Orbit 25537

Creation date: 2024-06-27T19:18:47.015081
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/AS1A07_147T01_9000003722_25537cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25537cztM0_level2_quad_clean.evt
Size (bytes)596,266,56098,850,240
Size568.6 MB 94.3 MB
Events in quadrant A3,702,667639,024
Events in quadrant B3,745,950647,682
Events in quadrant C4,138,310603,515
Events in quadrant D5,963,062581,674

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155300
B0156230
C0169110
D0228920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74881802.403846%
B74882012.684295%
C74882703.605769%
D74874175.569654%

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 7933 7489 0 0 0.00% 0.00%
B 7933 7489 1 1 0.01% 0.01%
C 7933 7489 39 39 0.49% 0.52%
D 7932 7488 211 211 2.66% 2.82%

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 13 254 11603 55.12 958 939 193.5
A 3 137 8971 41.52 958 939 193.5
A 0 226 8242 37.75 958 939 193.5
B 12 111 22492 118.24 948 923 182.4
B 0 190 21887 114.93 948 923 182.4
B 11 111 20745 108.67 948 923 182.4
C 2 16 432219 2018.03 908 910 213.7
C 14 238 143599 667.62 908 910 213.7
C 3 233 28053 127.0 908 910 213.7
D 1 52 2073827 8617.43 908 888 240.6
D 8 195 307172 1273.26 908 888 240.6
D 2 244 78375 322.12 908 888 240.6

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