ASTROSAT CZTI

Data Quality Report

Orbit 20230104_A12_044T04_9000005464_level2

Creation date: 2023-01-05T00:22:14.467358
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/AS1A12_044T04_9000005464cztM0_level2.fits modeM0/AS1A12_044T04_9000005464cztM0_level2_quad_clean.evt
Size (bytes)195,730,560223,116,480
Size186.7 MB 212.8 MB
Events in quadrant A1,313,8401,689,428
Events in quadrant B1,238,5841,651,150
Events in quadrant C1,279,1141,623,085
Events in quadrant D528,092233,390

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0516660
B0529140
C0492700
D01699030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04640
B04640
C04640
D04640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01010
B01010
C01010
D01010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A226512130.940356%
B226515502.428149%
C226511140.503289%
D226511829580.769061%

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 32783 22651 0 0 0.00% 0.00%
B 32783 22650 0 0 0.00% 0.00%
C 32783 22651 0 0 0.00% 0.00%
D 32782 22227 0 0 0.00% 0.00%

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 0 29 1111 9.24 343 325 85.0
A 9 19 1106 9.19 343 325 85.0
A 7 110 1062 8.67 343 325 85.0
B 2 9 1062 11.26 329 316 66.2
B 5 128 903 8.86 329 316 66.2
B 3 17 841 7.93 329 316 66.2
C 1 81 1107 9.02 338 320 87.2
C 3 202 1063 8.52 338 320 87.2
C 1 80 1035 8.2 338 320 87.2
D 7 3 401 6.41 151 138 41.0
D 4 160 389 6.12 151 138 41.0
D 6 62 387 6.07 151 138 41.0

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