ASTROSAT CZTI

Data Quality Report

Orbit 19892

Creation date: 2024-06-27T18:08:24.742947
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_19892cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19892cztM0_level2_quad_clean.evt
Size (bytes)557,956,800111,591,360
Size532.1 MB 106.4 MB
Events in quadrant A4,042,951717,055
Events in quadrant B4,068,468724,178
Events in quadrant C4,194,801692,415
Events in quadrant D4,040,745681,994

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172542
B0172642
C0175722
D0174892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81031732.135012%
B81042352.899803%
C81042833.492103%
D81041591.961994%

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 8973 8103 5 5 0.06% 0.06%
B 8974 8105 3 3 0.03% 0.04%
C 8974 8104 0 0 0.00% 0.00%
D 8974 8105 9 9 0.10% 0.11%

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 5 16 100284 474.0 1024 1001 209.5
A 0 226 8556 36.07 1024 1001 209.5
A 3 137 8447 35.55 1024 1001 209.5
B 4 216 57269 283.09 1020 994 198.8
B 12 111 24465 118.07 1020 994 198.8
B 11 111 22028 105.81 1020 994 198.8
C 9 221 181409 766.29 989 995 235.4
C 14 238 150445 634.78 989 995 235.4
C 13 61 6760 24.49 989 995 235.4
D 1 52 101053 405.37 1005 976 246.9
D 7 238 71606 286.09 1005 976 246.9
D 5 222 49866 198.03 1005 976 246.9

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