ASTROSAT CZTI

Data Quality Report

Orbit 25802

Creation date: 2024-06-27T19:21:35.908915
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_068T01_9000003756_25802cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25802cztM0_level2_quad_clean.evt
Size (bytes)861,143,040165,994,560
Size821.2 MB 158.3 MB
Events in quadrant A6,076,7551,057,240
Events in quadrant B6,029,5271,068,545
Events in quadrant C6,522,6961,015,840
Events in quadrant D6,598,7081,016,211

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258630
B0256810
C0271230
D0276400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125801521.208267%
B125811200.953819%
C125812491.979175%
D125811220.969716%

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 13850 12580 21 21 0.15% 0.17%
B 13851 12581 0 0 0.00% 0.00%
C 13851 12581 47 47 0.34% 0.37%
D 13851 12581 19 19 0.14% 0.15%

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 0 13 190487 618.05 1526 1494 305.8
A 13 254 16992 50.68 1526 1494 305.8
A 3 137 14600 42.86 1526 1494 305.8
B 4 171 40430 135.23 1512 1476 288.1
B 12 111 36328 120.99 1512 1476 288.1
B 0 219 34113 113.3 1512 1476 288.1
C 3 233 620031 1812.13 1455 1464 341.3
C 14 238 231301 673.32 1455 1464 341.3
C 13 61 10200 25.59 1455 1464 341.3
D 7 80 479877 1361.41 1476 1440 351.4
D 8 195 300999 852.4 1476 1440 351.4
D 13 104 119750 336.65 1476 1440 351.4

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