ASTROSAT CZTI

Data Quality Report

Orbit 20210828_C06_010T03_9000004676_level2

Creation date: 2021-08-30T14:44:59.612886
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/AS1C06_010T03_9000004676cztM0_level2_bc.evt modeM0/AS1C06_010T03_9000004676cztM0_level2_quad_clean.evt
Size (bytes)2,937,692,1601,178,743,680
Size2.7 GB 1.1 GB
Events in quadrant A12,956,7498,249,368
Events in quadrant B31,533,3758,081,781
Events in quadrant C19,313,6787,689,702
Events in quadrant D21,124,4767,608,276

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012120
B012120
C012120
D012120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01225350
B01889150
C01492340
D01525560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A594383810.641004%
B5943821643.640769%
C5943822283.748444%
D5943822163.728255%

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 69743 59431 0 0 0.00% 0.00%
B 69743 59428 32 32 0.05% 0.05%
C 69742 59429 30 30 0.04% 0.05%
D 69743 59430 115 115 0.16% 0.19%

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 13 254 103015 138.94 3305 3259 718.0
A 13 6 100222 135.05 3305 3259 718.0
A 15 174 89587 120.24 3305 3259 718.0
B 6 159 15743426 25125.58 3257 3181 626.5
B 10 245 1347938 2146.59 3257 3181 626.5
B 5 172 961397 1529.56 3257 3181 626.5
C 3 233 5082883 6941.31 3070 3065 731.8
C 0 10 1637393 2233.23 3070 3065 731.8
C 0 207 233010 314.21 3070 3065 731.8
D 8 195 4145544 5743.69 3173 3086 721.2
D 13 249 2139010 2961.55 3173 3086 721.2
D 12 218 833532 1151.45 3173 3086 721.2

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