ASTROSAT CZTI

Data Quality Report

Orbit 24703

Creation date: 2024-06-27T19:08:56.407709
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_191T01_9000003618_24703cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24703cztM0_level2_quad_clean.evt
Size (bytes)579,746,880165,470,400
Size552.9 MB 157.8 MB
Events in quadrant A4,056,2241,124,972
Events in quadrant B4,213,8561,135,151
Events in quadrant C4,421,3291,081,869
Events in quadrant D4,284,9471,075,245

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174422
B0178452
C0185262
D0182662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8571630.735037%
B85721151.341577%
C85721191.388241%
D8572640.746617%

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 10261 8571 0 0 0.00% 0.00%
B 10262 8572 20 20 0.19% 0.23%
C 10262 8572 5 5 0.05% 0.06%
D 10262 8572 17 17 0.17% 0.20%

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 10 255 16015 71.22 1048 1024 210.5
A 13 254 15336 67.99 1048 1024 210.5
A 3 137 9270 39.17 1048 1024 210.5
B 0 230 49407 245.36 1039 1010 197.2
B 4 52 26314 128.29 1039 1010 197.2
B 12 111 23938 116.24 1039 1010 197.2
C 7 247 296786 1272.96 1003 1010 232.4
C 14 238 160492 686.38 1003 1010 232.4
C 2 16 44566 187.46 1003 1010 232.4
D 1 52 219567 883.23 1021 990 247.5
D 8 195 155116 622.79 1021 990 247.5
D 2 234 31014 121.32 1021 990 247.5

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