ASTROSAT CZTI

Data Quality Report

Orbit 13436

Creation date: 2024-06-27T16:40:47.087717
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/AS1A04_103T01_9000001988_13436cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13436cztM0_level2_quad_clean.evt
Size (bytes)530,159,040103,104,000
Size505.6 MB 98.3 MB
Events in quadrant A3,583,536656,421
Events in quadrant B3,676,656674,355
Events in quadrant C3,499,832651,472
Events in quadrant D4,785,151616,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158283
B0160492
C0154762
D0194952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7520540.718085%
B7520700.930851%
C7520210.279255%
D75201411.875000%

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 7861 7522 35 35 0.45% 0.47%
B 7861 7522 24 24 0.31% 0.32%
C 7861 7522 6 6 0.08% 0.08%
D 7861 7522 117 117 1.49% 1.56%

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 69 151273 834.65 886 865 180.2
A 1 162 13372 69.4 886 865 180.2
A 0 226 7831 38.66 886 865 180.2
B 4 142 84666 488.03 891 867 171.7
B 0 230 39852 227.04 891 867 171.7
B 3 64 32932 186.74 891 867 171.7
C 3 233 103510 510.93 863 866 200.9
C 14 234 18603 88.29 863 866 200.9
C 0 207 6433 27.71 863 866 200.9
D 13 249 872627 4253.32 847 824 205.0
D 8 195 648867 3161.65 847 824 205.0
D 2 234 29150 138.2 847 824 205.0

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