ASTROSAT CZTI

Data Quality Report

Orbit 22237

Creation date: 2024-06-27T18:38:26.973680
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/AS1T03_147T01_9000003290_22237cztM0_level2.evt modeM0/AS1T03_147T01_9000003290_22237cztM0_level2_quad_clean.evt
Size (bytes)576,181,44086,388,480
Size549.5 MB 82.4 MB
Events in quadrant A3,877,462525,611
Events in quadrant B3,936,671533,692
Events in quadrant C3,909,655509,500
Events in quadrant D5,187,219494,952

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167442
B0166992
C0166593
D0207042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79392583.249780%
B79392663.350548%
C79382473.111615%
D79385777.268833%

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 8124 7941 0 0 0.00% 0.00%
B 8124 7941 0 0 0.00% 0.00%
C 8123 7940 0 0 0.00% 0.00%
D 8123 7940 362 362 4.46% 4.56%

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 15 192 19564 92.01 1000 976 202.0
A 13 254 11675 52.96 1000 976 202.0
A 3 137 8982 39.63 1000 976 202.0
B 0 190 27226 136.83 989 960 192.0
B 12 111 23709 118.51 989 960 192.0
B 11 111 21145 105.15 989 960 192.0
C 14 238 149278 648.72 963 966 228.6
C 13 61 6655 24.88 963 966 228.6
C 8 128 5628 20.39 963 966 228.6
D 12 235 787206 3326.84 968 939 236.3
D 1 52 549800 2322.33 968 939 236.3
D 2 136 117665 493.89 968 939 236.3

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