ASTROSAT CZTI

Data Quality Report

Orbit 28440

Creation date: 2024-06-27T19:51:45.568706
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/AS1A10_101T21_9000004090_28440cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28440cztM0_level2_quad_clean.evt
Size (bytes)505,503,360111,090,240
Size482.1 MB 105.9 MB
Events in quadrant A2,886,428757,986
Events in quadrant B4,146,325749,569
Events in quadrant C2,910,849731,090
Events in quadrant D4,955,878703,774

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125150
B0161130
C0124570
D0186250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6035560.927920%
B60363636.013917%
C6036911.507621%
D60364136.842280%

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 7105 6035 0 0 0.00% 0.00%
B 7106 6036 250 250 3.52% 4.14%
C 7106 6036 0 0 0.00% 0.00%
D 7106 6036 562 562 7.91% 9.31%

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 9404 58.43 744 728 148.5
A 15 169 9192 57.0 744 728 148.5
A 3 137 7141 43.19 744 728 148.5
B 10 245 1190266 8790.1 723 705 135.3
B 0 183 56685 413.65 723 705 135.3
B 0 190 27469 197.77 723 705 135.3
C 14 238 115880 700.3 711 716 164.4
C 7 220 14348 82.89 711 716 164.4
C 2 16 5413 28.56 711 716 164.4
D 8 195 1558269 9269.59 715 696 168.0
D 1 52 597083 3549.28 715 696 168.0
D 2 250 54318 319.12 715 696 168.0

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