ASTROSAT CZTI

Data Quality Report

Orbit 22979

Creation date: 2024-06-27T18:48:23.040496
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_091T04_9000003394_22979cztM0_level2.evt modeM0/AS1A07_091T04_9000003394_22979cztM0_level2_quad_clean.evt
Size (bytes)931,253,760116,697,600
Size888.1 MB 111.3 MB
Events in quadrant A4,685,875754,878
Events in quadrant B11,571,383608,110
Events in quadrant C4,733,782734,605
Events in quadrant D6,515,094721,833

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208281
B0411901
C0208911
D0264442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10302710.689187%
B10303287127.865670%
C103031201.164709%
D103023493.387692%

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 10857 10303 0 0 0.00% 0.00%
B 10858 10304 2359 2359 21.73% 22.89%
C 10858 10304 0 0 0.00% 0.00%
D 10857 10303 190 190 1.75% 1.84%

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 13 170 40374 160.17 1205 1176 244.7
A 13 254 15733 59.48 1205 1176 244.7
A 3 137 11004 40.16 1205 1176 244.7
B 5 31 5408248 27004.67 1041 1014 200.2
B 5 15 1299604 6485.38 1041 1014 200.2
B 5 14 687075 3426.31 1041 1014 200.2
C 14 238 181397 667.97 1156 1163 269.8
C 7 247 27338 97.01 1156 1163 269.8
C 0 10 16085 55.3 1156 1163 269.8
D 1 52 914430 3234.49 1161 1124 282.4
D 12 233 761553 2693.07 1161 1124 282.4
D 13 153 198485 698.96 1161 1124 282.4

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