ASTROSAT CZTI

Data Quality Report

Orbit 16374

Creation date: 2024-06-27T17:21:45.607573
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_069T04_9000002418_16374cztM0_level2.evt modeM0/AS1A05_069T04_9000002418_16374cztM0_level2_quad_clean.evt
Size (bytes)590,520,96099,901,440
Size563.2 MB 95.3 MB
Events in quadrant A3,892,454632,952
Events in quadrant B5,155,792626,699
Events in quadrant C4,391,164606,658
Events in quadrant D3,898,622599,924

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167743
B0203882
C0179472
D0171412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80472282.833354%
B80475526.859699%
C80473083.827513%
D80472072.572387%

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 9208 8048 0 0 0.00% 0.00%
B 9208 8048 198 198 2.15% 2.46%
C 9208 8049 3 3 0.03% 0.04%
D 9208 8050 26 26 0.28% 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 3 1 16414 76.13 1001 979 202.7
A 15 174 15795 73.08 1001 979 202.7
A 9 143 12697 57.8 1001 979 202.7
B 10 16 407614 2148.09 987 962 189.3
B 4 173 344030 1812.22 987 962 189.3
B 15 35 241186 1268.96 987 962 189.3
C 3 233 520292 2341.98 953 958 221.8
C 14 238 146269 655.29 953 958 221.8
C 13 61 6807 26.38 953 958 221.8
D 10 70 135071 559.74 974 941 239.6
D 1 52 47008 192.24 974 941 239.6
D 2 234 30111 121.73 974 941 239.6

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