ASTROSAT CZTI

Data Quality Report

Orbit 06808

Creation date: 2024-06-27T15:11:55.496265
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/AS1G06_086T02_9000000936_06808cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06808cztM0_level2_quad_clean.evt
Size (bytes)255,363,84056,856,960
Size243.5 MB 54.2 MB
Events in quadrant A1,817,154364,316
Events in quadrant B1,768,308373,624
Events in quadrant C1,740,465365,240
Events in quadrant D2,144,607346,409

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082142
B080731
C079941
D090231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3851370.960789%
B3851471.220462%
C3851230.597247%
D3851681.765775%

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 3946 3853 0 0 0.00% 0.00%
B 3946 3853 0 0 0.00% 0.00%
C 3946 3853 2 2 0.05% 0.05%
D 3946 3853 58 58 1.47% 1.51%

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 8 15 160472 1803.34 429 419 88.8
A 0 226 4116 41.65 429 419 88.8
A 12 194 3926 39.51 429 419 88.8
B 4 81 43066 496.83 435 425 85.8
B 0 228 11527 129.35 435 425 85.8
B 4 48 11171 125.21 435 425 85.8
C 9 247 47579 468.2 424 425 100.7
C 12 4 25332 247.3 424 425 100.7
C 12 16 10707 102.09 424 425 100.7
D 2 216 188178 1816.31 416 402 103.4
D 14 34 180884 1745.76 416 402 103.4
D 8 195 162092 1563.99 416 402 103.4

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