ASTROSAT CZTI

Data Quality Report

Orbit 30847

Creation date: 2024-06-27T20:20:17.655441
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_071T40_9000004458_30847cztM0_level2.evt modeM0/AS1A10_071T40_9000004458_30847cztM0_level2_quad_clean.evt
Size (bytes)810,783,36063,927,360
Size773.2 MB 61.0 MB
Events in quadrant A3,639,964415,309
Events in quadrant B12,774,258295,773
Events in quadrant C3,715,474388,067
Events in quadrant D3,988,045384,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143702
B0423788
C0146672
D0159482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6463971.500851%
B6462476173.676880%
C64621802.785515%
D6462791.222532%

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 7768 6465 26 26 0.33% 0.40%
B 7767 6462 3190 3190 41.07% 49.37%
C 7767 6463 29 29 0.37% 0.45%
D 7767 6464 35 35 0.45% 0.54%

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 31 134154 740.27 909 895 180.0
A 13 254 11943 61.37 909 895 180.0
A 3 137 8412 41.76 909 895 180.0
B 6 36 8234664 58480.97 747 731 140.8
B 6 159 1541740 10944.92 747 731 140.8
B 4 80 21843 149.95 747 731 140.8
C 0 10 158328 805.92 845 852 195.4
C 14 238 139536 709.75 845 852 195.4
C 3 233 92963 471.4 845 852 195.4
D 8 195 542614 2713.11 850 833 199.7
D 12 79 47065 231.52 850 833 199.7
D 2 250 40562 198.95 850 833 199.7

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