ASTROSAT CZTI

Data Quality Report

Orbit 23627

Creation date: 2024-06-27T18:56:58.446189
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_9000003490_23627cztM0_level2.evt modeM0/AS1A07_147T01_9000003490_23627cztM0_level2_quad_clean.evt
Size (bytes)871,669,44081,253,440
Size831.3 MB 77.5 MB
Events in quadrant A3,518,240523,415
Events in quadrant B4,541,655530,499
Events in quadrant C3,601,511516,420
Events in quadrant D14,240,440377,739

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151281
B0180211
C0152261
D0472981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73481281.741971%
B73493494.748945%
C73481672.272727%
D7348452361.554164%

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 7608 7348 0 0 0.00% 0.00%
B 7609 7349 149 149 1.96% 2.03%
C 7608 7348 0 0 0.00% 0.00%
D 7608 7348 4362 4362 57.33% 59.36%

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 10768 53.12 912 890 185.9
A 3 137 8271 39.69 912 890 185.9
A 0 226 7761 36.95 912 890 185.9
B 3 64 793619 4540.04 896 873 174.6
B 0 189 81658 462.65 896 873 174.6
B 0 230 51580 290.4 896 873 174.6
C 14 238 137757 662.42 876 880 206.6
C 8 208 24480 114.21 876 880 206.6
C 7 247 10941 48.69 876 880 206.6
D 1 52 11364576 69021.6 667 645 164.6
D 12 233 160961 973.72 667 645 164.6
D 9 85 93493 563.93 667 645 164.6

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