ASTROSAT CZTI

Data Quality Report

Orbit 13545

Creation date: 2024-06-27T16:42:23.089376
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/AS1T02_038T01_9000001994_13545cztM0_level2.evt modeM0/AS1T02_038T01_9000001994_13545cztM0_level2_quad_clean.evt
Size (bytes)770,961,600170,930,880
Size735.2 MB 163.0 MB
Events in quadrant A5,385,9071,143,096
Events in quadrant B5,837,4371,144,245
Events in quadrant C5,582,2051,130,348
Events in quadrant D5,859,8461,060,048

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220583
B0235772
C0226722
D0236532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A101001000.990099%
B101002112.089109%
C10100680.673267%
D101001151.138614%

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 12276 10101 8 8 0.07% 0.08%
B 12276 10101 50 50 0.41% 0.50%
C 12276 10101 10 10 0.08% 0.10%
D 12276 10101 54 54 0.44% 0.53%

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 14 238 38321 125.98 1369 1347 293.5
A 15 69 35121 115.08 1369 1347 293.5
A 1 162 32598 106.48 1369 1347 293.5
B 5 32 300811 1126.84 1349 1321 265.8
B 4 142 91962 341.04 1349 1321 265.8
B 3 64 66825 246.46 1349 1321 265.8
C 3 233 411107 1315.3 1319 1339 311.5
C 14 234 35296 109.0 1319 1339 311.5
C 13 61 9476 26.12 1319 1339 311.5
D 13 122 218212 673.08 1312 1281 322.3
D 2 14 211005 650.72 1312 1281 322.3
D 5 222 167838 516.78 1312 1281 322.3

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