ASTROSAT CZTI

Data Quality Report

Orbit 27448

Creation date: 2024-06-27T19:40:11.596100
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_249T01_9000003934_27448cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27448cztM0_level2_quad_clean.evt
Size (bytes)530,922,24091,111,680
Size506.3 MB 86.9 MB
Events in quadrant A3,664,455573,533
Events in quadrant B3,797,130573,312
Events in quadrant C3,675,974548,060
Events in quadrant D4,437,813547,568

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155110
B0156550
C0155020
D0182330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74202042.749326%
B74202383.207547%
C74202643.557951%
D74192283.073190%

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 7755 7420 0 0 0.00% 0.00%
B 7755 7420 5 5 0.06% 0.07%
C 7755 7420 1 1 0.01% 0.01%
D 7754 7419 51 51 0.66% 0.69%

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 13 254 13589 65.86 948 926 192.3
A 3 137 9271 43.4 948 926 192.3
A 0 226 8145 37.54 948 926 192.3
B 0 189 74349 405.16 930 905 181.3
B 0 230 25044 133.16 930 905 181.3
B 12 111 22603 119.7 930 905 181.3
C 14 238 141205 661.23 900 905 212.2
C 10 22 24546 111.42 900 905 212.2
C 13 61 6209 25.0 900 905 212.2
D 1 52 766758 3453.67 919 896 221.8
D 2 250 183552 823.69 919 896 221.8
D 2 234 30144 131.89 919 896 221.8

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