ASTROSAT CZTI

Data Quality Report

Orbit 47908

Creation date: 2024-08-07T10:15:54.990208
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/AS1A09_038T41_9000006376_47908cztM0_level2.fits modeM0/AS1A09_038T41_9000006376_47908cztM0_level2_quad_clean.evt
Size (bytes)171,169,92034,727,040
Size163.2 MB 33.1 MB
Events in quadrant A3,067,067191,081
Events in quadrant B1,170,671244,162
Events in quadrant C924,461240,135
Events in quadrant D1,002,656219,432

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106131
B050371
C044351
D046581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A217253024.401473%
B2172693.176796%
C2172150.690608%
D2172200.920810%

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 3202 2173 354 354 11.06% 16.29%
B 3202 2173 19 19 0.59% 0.87%
C 3202 2173 0 0 0.00% 0.00%
D 3202 2173 3 3 0.09% 0.14%

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 10 83 1353728 29116.98 215 211 46.5
A 13 248 870775 18727.65 215 211 46.5
A 0 31 3062 61.33 215 211 46.5
B 5 32 90814 1876.43 241 233 48.3
B 0 200 39819 820.04 241 233 48.3
B 8 234 37024 762.14 241 233 48.3
C 12 2 3897 64.25 235 236 57.0
C 13 61 1670 25.17 235 236 57.0
C 14 67 1474 21.73 235 236 57.0
D 2 249 25036 417.25 231 224 59.5
D 13 29 19142 318.14 231 224 59.5
D 12 233 13288 219.69 231 224 59.5

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