ASTROSAT CZTI

Data Quality Report

Orbit 36318

Creation date: 2022-06-16T23:44:23.151590
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_089T02_9000005188_36318cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36318cztM0_level2_quad_clean.evt
Size (bytes)545,564,16077,224,320
Size520.3 MB 73.6 MB
Events in quadrant A2,700,839540,124
Events in quadrant B6,504,339459,860
Events in quadrant C3,025,763503,438
Events in quadrant D3,942,223473,368

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111803
B0228052
C0120042
D0150312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A514990.174791%
B5149145328.219072%
C5149981.903282%
D51494007.768499%

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 7182 5150 0 0 0.00% 0.00%
B 7181 5148 1313 1313 18.28% 25.51%
C 7182 5150 85 85 1.18% 1.65%
D 7182 5150 408 408 5.68% 7.92%

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 189260 1459.62 643 633 129.2
A 9 143 8956 64.4 643 633 129.2
A 7 16 8825 63.39 643 633 129.2
B 5 172 1904280 18135.92 551 538 105.0
B 4 171 1207321 11496.37 551 538 105.0
B 5 236 952537 9069.18 551 538 105.0
C 0 10 240396 1724.68 600 604 139.0
C 0 207 226065 1621.61 600 604 139.0
C 15 214 218152 1564.69 600 604 139.0
D 12 233 533931 3587.53 589 575 148.7
D 12 6 446801 3001.47 589 575 148.7
D 2 250 416252 2795.98 589 575 148.7

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