ASTROSAT CZTI

Data Quality Report

Orbit 24682

Creation date: 2024-06-27T19:08:42.966775
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_191T01_9000003618_24682cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24682cztM0_level2_quad_clean.evt
Size (bytes)432,659,520120,447,360
Size412.6 MB 114.9 MB
Events in quadrant A2,895,247830,418
Events in quadrant B2,994,697830,307
Events in quadrant C2,850,780785,376
Events in quadrant D3,948,549776,867

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125352
B0127941
C0125841
D0157591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6093550.902675%
B6094891.460453%
C6094681.115852%
D60941592.609124%

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 6938 6094 3 3 0.04% 0.05%
B 6939 6094 17 17 0.24% 0.28%
C 6939 6094 0 0 0.00% 0.00%
D 6939 6095 147 147 2.12% 2.41%

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 4 2 16361 105.19 739 725 148.6
A 12 96 15386 98.63 739 725 148.6
A 13 254 9840 61.32 739 725 148.6
B 4 80 98358 711.82 729 711 137.2
B 7 202 20839 146.73 729 711 137.2
B 12 111 16402 114.38 729 711 137.2
C 14 238 112178 692.81 693 697 160.9
C 6 96 29394 178.34 693 697 160.9
C 13 61 4781 25.38 693 697 160.9
D 1 52 1101591 6438.5 706 684 171.0
D 8 195 94172 546.75 706 684 171.0
D 7 238 67495 390.73 706 684 171.0

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