ASTROSAT CZTI

Data Quality Report

Orbit 20220418_A11_068T03_9000005076_level2

Creation date: 2022-04-24T04:08:23.209159
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/AS1A11_068T03_9000005076cztM0_level2_bc.evt modeM0/AS1A11_068T03_9000005076cztM0_level2_quad_clean.evt
Size (bytes)2,044,497,600495,492,480
Size1.9 GB 472.5 MB
Events in quadrant A9,258,5173,188,660
Events in quadrant B24,208,9203,005,781
Events in quadrant C12,352,6773,116,293
Events in quadrant D13,369,5172,943,434

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08180
B08180
C08180
D08180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0828620
B01413130
C0920130
D0991810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01630
B01630
C01630
D01630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40087720.179609%
B40087497112.400529%
C400877341.831018%
D4008711102.768977%

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 56340 40096 4 4 0.01% 0.01%
B 56340 40087 241 241 0.43% 0.60%
C 56340 40089 108 108 0.19% 0.27%
D 56340 40088 130 130 0.23% 0.32%

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 719182 1559.68 2115 2081 459.8
A 13 6 178050 382.73 2115 2081 459.8
A 9 143 147458 316.19 2115 2081 459.8
B 4 251 11080135 27793.61 2044 2005 398.6
B 5 236 2580731 6469.69 2044 2005 398.6
B 5 172 1097817 2749.25 2044 2005 398.6
C 0 10 1723327 3701.42 2050 2034 465.0
C 15 214 1541899 3311.28 2050 2034 465.0
C 0 207 493281 1056.36 2050 2034 465.0
D 13 249 1603074 3362.72 2040 1976 476.1
D 8 195 782928 1640.2 2040 1976 476.1
D 1 52 393955 823.26 2040 1976 476.1

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