ASTROSAT CZTI

Data Quality Report

Orbit 21920

Creation date: 2024-06-27T18:33:58.916201
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_100T03_9000003242_21920cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21920cztM0_level2_quad_clean.evt
Size (bytes)522,648,000135,852,480
Size498.4 MB 129.6 MB
Events in quadrant A3,659,625899,278
Events in quadrant B3,848,879913,973
Events in quadrant C3,620,051896,031
Events in quadrant D4,178,363871,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162002
B0165962
C0160452
D0178952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7679520.677172%
B76791031.341320%
C7679931.211095%
D76791391.810132%

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 7974 7679 22 22 0.28% 0.29%
B 7974 7679 37 37 0.46% 0.48%
C 7974 7680 2 2 0.03% 0.03%
D 7974 7680 96 96 1.20% 1.25%

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 4 2 213294 1180.05 891 870 180.0
A 13 254 13643 70.96 891 870 180.0
A 3 137 7721 38.06 891 870 180.0
B 3 64 222200 1299.75 895 871 170.3
B 0 230 53322 308.02 895 871 170.3
B 0 197 43385 249.66 895 871 170.3
C 14 238 135859 669.95 868 875 201.5
C 10 22 79656 391.01 868 875 201.5
C 8 128 12584 58.11 868 875 201.5
D 1 52 640836 3074.01 867 841 208.2
D 7 38 65740 311.72 867 841 208.2
D 2 136 38291 179.88 867 841 208.2

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