ASTROSAT CZTI

Data Quality Report

Orbit 27998

Creation date: 2024-06-27T19:46:54.072997
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_065T03_9000004040_27998cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27998cztM0_level2_quad_clean.evt
Size (bytes)560,243,520105,698,880
Size534.3 MB 100.8 MB
Events in quadrant A3,779,007697,144
Events in quadrant B3,877,754690,207
Events in quadrant C4,203,758645,842
Events in quadrant D4,602,660651,162

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157680
B0161260
C0173410
D0184130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74321692.273950%
B74322162.906351%
C74322853.834769%
D74333825.139244%

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 8657 7432 0 0 0.00% 0.00%
B 8657 7432 10 10 0.12% 0.13%
C 8657 7433 32 32 0.37% 0.43%
D 8658 7434 277 277 3.20% 3.73%

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 13 19827 96.45 972 953 195.7
A 3 137 9949 45.97 972 953 195.7
A 13 254 9845 45.44 972 953 195.7
B 10 245 99436 529.82 956 931 185.9
B 12 111 23808 123.05 956 931 185.9
B 11 111 21719 111.81 956 931 185.9
C 2 16 233335 1081.89 914 920 214.8
C 3 233 197893 916.91 914 920 214.8
C 14 238 145154 671.41 914 920 214.8
D 1 52 634923 2885.67 914 892 219.7
D 8 195 283124 1284.53 914 892 219.7
D 7 80 244096 1106.9 914 892 219.7

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