ASTROSAT CZTI

Data Quality Report

Orbit 38359

Creation date: 2024-06-27T21:51:37.727260
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/AS1A10_094T24_9000005374_38359cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38359cztM0_level2_quad_clean.evt
Size (bytes)880,819,200151,165,440
Size840.0 MB 144.2 MB
Events in quadrant A5,685,1111,096,810
Events in quadrant B4,875,7671,121,129
Events in quadrant C4,336,6571,079,174
Events in quadrant D17,023,074665,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226623
B0201032
C0183582
D0567072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8854941.061667%
B8854860.971312%
C8854120.135532%
D8854355340.128755%

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 12648 8856 54 54 0.43% 0.61%
B 12648 8856 45 45 0.36% 0.51%
C 12648 8856 11 11 0.09% 0.12%
D 12648 8856 4140 4140 32.73% 46.75%

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 602442 2934.56 1026 1009 204.9
A 12 16 473309 2304.49 1026 1009 204.9
A 9 143 337250 1640.62 1026 1009 204.9
B 4 170 235527 1238.78 1024 1000 189.3
B 5 172 152572 800.61 1024 1000 189.3
B 0 183 132095 692.45 1024 1000 189.3
C 15 214 372910 1636.65 992 1002 227.2
C 15 159 33632 143.59 992 1002 227.2
C 0 10 20542 85.99 992 1002 227.2
D 10 203 11425154 50674.24 905 878 225.4
D 2 16 566613 2509.41 905 878 225.4
D 12 227 432357 1913.9 905 878 225.4

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