ASTROSAT CZTI

Data Quality Report

Orbit 02204

Creation date: 2024-06-27T14:15:13.455337
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/AS1T01_072T04_9000000342_02204cztM0_level2.evt modeM0/AS1T01_072T04_9000000342_02204cztM0_level2_quad_clean.evt
Size (bytes)1,087,421,76071,455,680
Size1.0 GB 68.1 MB
Events in quadrant A4,008,536530,297
Events in quadrant B3,496,755550,274
Events in quadrant C20,152,20330,042
Events in quadrant D4,755,523515,261

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175762
B0159372
C06559420
D0197952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B010
C010
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77022423.142041%
B7702871.129577%
C77007700100.000000%
D77022803.635419%

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 7941 7703 148 148 1.86% 1.92%
B 7941 7702 2 2 0.03% 0.03%
C 7942 7703 7621 7621 95.96% 98.94%
D 7941 7702 254 254 3.20% 3.30%

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 15 171 654189 3669.96 864 842 178.0
A 10 2 22744 123.03 864 842 178.0
A 12 194 9763 50.11 864 842 178.0
B 6 219 36075 202.59 891 866 173.8
B 4 200 20744 114.38 891 866 173.8
B 3 0 16451 89.67 891 866 173.8
C 7 111 6653984 83493.56 121 110 79.7
C 0 187 2927154 36728.88 121 110 79.7
C 7 247 1532113 19223.75 121 110 79.7
D 7 223 1514260 7555.12 836 812 200.3
D 2 54 17205 81.83 836 812 200.3
D 15 194 15476 73.2 836 812 200.3

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