ASTROSAT CZTI

Data Quality Report

Orbit 28994

Creation date: 2024-06-27T19:58:56.055993
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_073T06_9000004156_28994cztM0_level2.evt modeM0/AS1A10_073T06_9000004156_28994cztM0_level2_quad_clean.evt
Size (bytes)477,466,56097,459,200
Size455.3 MB 92.9 MB
Events in quadrant A3,136,114644,049
Events in quadrant B3,424,055665,784
Events in quadrant C3,224,979620,028
Events in quadrant D4,251,479586,035

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131992
B0139402
C0133603
D0167632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6239310.496874%
B6239560.897580%
C6238851.362616%
D6238721.154216%

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 7574 6241 0 0 0.00% 0.00%
B 7574 6241 12 12 0.16% 0.19%
C 7573 6240 3 3 0.04% 0.05%
D 7573 6240 59 59 0.78% 0.95%

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 6 16 23997 145.51 805 790 159.5
A 13 254 11448 66.83 805 790 159.5
A 3 137 7267 40.61 805 790 159.5
B 10 245 134067 874.02 810 790 152.5
B 10 246 97535 634.45 810 790 152.5
B 12 111 17879 112.07 810 790 152.5
C 14 238 127987 704.0 780 787 180.7
C 3 233 30228 162.94 780 787 180.7
C 2 114 15046 78.92 780 787 180.7
D 8 195 931132 5100.76 771 752 182.4
D 1 52 282625 1545.35 771 752 182.4
D 2 250 35580 190.94 771 752 182.4

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