ASTROSAT CZTI

Data Quality Report

Orbit 36755

Creation date: 2024-06-27T21:31:14.287986
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_101T01_9000005238_36755cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36755cztM0_level2_quad_clean.evt
Size (bytes)458,838,72044,069,760
Size437.6 MB 42.0 MB
Events in quadrant A1,934,609350,699
Events in quadrant B7,490,43138,980
Events in quadrant C2,414,667338,623
Events in quadrant D1,799,693339,045

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099781815
B0309206333
C0117952247
D099051847

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010017
B09616
C09711
D010322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0211
C0221
D0221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3840110.286458%
B3489335596.159358%
C38121784.669465%
D3821130.340225%

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 7225 4110 8 8 0.11% 0.19%
B 7224 3493 2529 2529 35.01% 72.40%
C 7225 4063 141 141 1.95% 3.47%
D 7226 4096 12 12 0.17% 0.29%

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 183659 2064.45 435 428 88.8
A 9 143 54104 604.76 435 428 88.8
A 13 254 5537 57.56 435 428 88.8
B 12 1 7241424 598089.13 53 52 12.1
B 4 171 22589 1861.41 53 52 12.1
B 12 144 4191 341.85 53 52 12.1
C 14 254 553455 5870.96 406 409 94.2
C 15 214 164183 1738.57 406 409 94.2
C 0 10 102215 1080.74 406 409 94.2
D 13 249 82107 802.83 415 403 101.8
D 2 250 22276 214.93 415 403 101.8
D 12 6 21043 202.81 415 403 101.8

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