ASTROSAT CZTI

Data Quality Report

Orbit 23974

Creation date: 2024-06-27T19:00:43.857755
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/AS1A07_065T01_9000003554_23974cztM0_level2.evt modeM0/AS1A07_065T01_9000003554_23974cztM0_level2_quad_clean.evt
Size (bytes)673,577,280102,795,840
Size642.4 MB 98.0 MB
Events in quadrant A3,571,181679,192
Events in quadrant B4,682,900667,029
Events in quadrant C3,750,484645,332
Events in quadrant D7,897,982610,516

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154332
B0186712
C0158012
D0285574

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73291111.514531%
B73295727.804612%
C73292223.029063%
D7328142619.459607%

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 7644 7330 0 0 0.00% 0.00%
B 7644 7330 315 315 4.12% 4.30%
C 7644 7330 63 63 0.82% 0.86%
D 7643 7329 957 957 12.52% 13.06%

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 12489 61.75 925 905 187.6
A 3 137 8382 39.86 925 905 187.6
A 0 226 8093 38.32 925 905 187.6
B 4 200 1064868 6116.96 902 878 173.9
B 0 197 44463 250.57 902 878 173.9
B 0 190 33038 184.89 902 878 173.9
C 0 10 198792 967.08 874 880 204.6
C 14 238 135935 659.93 874 880 204.6
C 13 61 6066 25.34 874 880 204.6
D 12 218 3929196 19368.66 826 802 202.8
D 8 195 217608 1068.95 826 802 202.8
D 7 238 180842 887.67 826 802 202.8

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