ASTROSAT CZTI

Data Quality Report

Orbit 19825

Creation date: 2024-06-27T18:07:33.790479
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_118T01_9000002962_19825cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19825cztM0_level2_quad_clean.evt
Size (bytes)3,173,918,400487,316,160
Size3.0 GB 464.7 MB
Events in quadrant A22,392,0533,044,329
Events in quadrant B21,605,3893,080,075
Events in quadrant C20,402,3162,941,154
Events in quadrant D28,842,2992,761,589

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08680
B08680
C08680
D08680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0941648
B0913288
C0877549
D01145788

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4270510712.507903%
B427059412.203489%
C427048031.880386%
D4270425646.004121%

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 49008 42710 226 226 0.46% 0.53%
B 49008 42710 134 134 0.27% 0.31%
C 49007 42709 1 1 0.00% 0.00%
D 49007 42708 1737 1737 3.54% 4.07%

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 14 238 1557911 1478.15 5217 5100 1050.5
A 9 143 428869 403.39 5217 5100 1050.5
A 14 254 140506 128.9 5217 5100 1050.5
B 7 220 761881 770.57 5195 5067 982.2
B 10 245 198409 196.86 5195 5067 982.2
B 12 111 122135 119.2 5195 5067 982.2
C 14 238 771930 650.19 5022 5051 1179.5
C 3 233 39057 28.83 5022 5051 1179.5
C 13 61 35055 25.44 5022 5051 1179.5
D 1 52 6357389 5238.35 4987 4837 1212.7
D 12 33 1522851 1251.76 4987 4837 1212.7
D 7 238 841774 690.14 4987 4837 1212.7

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