ASTROSAT CZTI

Data Quality Report

Orbit 23911

Creation date: 2024-06-27T19:00:00.332711
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_142T01_9000003540_23911cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23911cztM0_level2_quad_clean.evt
Size (bytes)575,187,84081,187,200
Size548.5 MB 77.4 MB
Events in quadrant A3,631,009522,571
Events in quadrant B3,679,265526,860
Events in quadrant C3,626,451487,435
Events in quadrant D6,040,854466,126

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148941
B0149871
C0147821
D0227851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6529961.470363%
B6529971.485679%
C65291432.190228%
D65295027.688773%

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 7804 6530 0 0 0.00% 0.00%
B 7804 6530 2 2 0.03% 0.03%
C 7804 6530 9 9 0.12% 0.14%
D 7804 6530 382 382 4.89% 5.85%

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 11249 55.7 942 926 185.3
A 0 226 8397 40.31 942 926 185.3
A 3 137 7148 33.58 942 926 185.3
B 0 228 25243 142.95 922 905 170.3
B 12 111 19093 106.83 922 905 170.3
B 5 172 17742 98.89 922 905 170.3
C 14 238 141856 704.97 875 882 200.0
C 0 10 63040 310.83 875 882 200.0
C 7 247 7078 30.98 875 882 200.0
D 12 218 1593904 7489.57 890 865 212.7
D 8 195 862643 4051.59 890 865 212.7
D 1 52 86495 402.58 890 865 212.7

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