ASTROSAT CZTI

Data Quality Report

Orbit 27371

Creation date: 2024-06-27T19:39:26.341996
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_249T01_9000003934_27371cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27371cztM0_level2_quad_clean.evt
Size (bytes)541,336,32090,864,000
Size516.3 MB 86.7 MB
Events in quadrant A3,098,641603,093
Events in quadrant B3,174,748608,701
Events in quadrant C5,568,830552,117
Events in quadrant D4,148,814571,943

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124980
B0127720
C0203740
D0160320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5947290.487641%
B5948641.075992%
C594890215.164761%
D59482223.732347%

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 7237 5948 0 0 0.00% 0.00%
B 7238 5949 11 11 0.15% 0.18%
C 7238 5949 641 641 8.86% 10.77%
D 7238 5949 202 202 2.79% 3.40%

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 9613 55.15 802 789 160.0
A 0 226 7022 38.95 802 789 160.0
A 3 137 6839 37.81 802 789 160.0
B 15 32 86080 584.51 786 770 146.0
B 12 111 17516 114.74 786 770 146.0
B 11 111 15695 102.26 786 770 146.0
C 2 16 2630426 15743.94 720 726 167.0
C 14 238 117507 699.16 720 726 167.0
C 15 208 7669 41.57 720 726 167.0
D 1 52 1084539 6053.65 763 746 179.0
D 2 120 90334 500.4 763 746 179.0
D 2 250 80656 446.35 763 746 179.0

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