ASTROSAT CZTI

Data Quality Report

Orbit 31246

Creation date: 2024-06-27T20:25:34.040720
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_073T02_9000004522_31246cztM0_level2.evt modeM0/AS1A10_073T02_9000004522_31246cztM0_level2_quad_clean.evt
Size (bytes)1,137,407,040116,760,960
Size1.1 GB 111.4 MB
Events in quadrant A4,878,353773,844
Events in quadrant B8,242,816770,451
Events in quadrant C5,656,085744,044
Events in quadrant D14,974,311531,444

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02100
C02100
D02100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209652
B0318502
C0230122
D0515222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10320350.339147%
B103201311.269380%
C103191681.628065%
D10320369935.843023%

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 12000 10322 0 0 0.00% 0.00%
B 12000 10322 13 13 0.11% 0.13%
C 11999 10321 27 27 0.23% 0.26%
D 12000 10322 3557 3557 29.64% 34.46%

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 11 47 30470 116.84 1255 1231 250.2
A 13 254 18979 70.92 1255 1231 250.2
A 3 137 12830 46.35 1255 1231 250.2
B 6 159 2959128 12455.27 1240 1208 237.5
B 0 190 216014 904.51 1240 1208 237.5
B 4 80 110690 461.01 1240 1208 237.5
C 3 233 514900 1806.61 1200 1204 284.3
C 14 238 196134 685.55 1200 1204 284.3
C 0 10 143441 500.23 1200 1204 284.3
D 8 195 10735842 42617.09 1016 990 251.9
D 2 250 210367 831.22 1016 990 251.9
D 12 233 85444 335.28 1016 990 251.9

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