ASTROSAT CZTI

Data Quality Report

Orbit 49827

Creation date: 2024-12-14T15:15:58.127362
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/AS1A13_037T01_9000006440_49827cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49827cztM0_level2_quad_clean.evt
Size (bytes)1,174,279,68044,176,320
Size1.1 GB 42.1 MB
Events in quadrant A13,982,665135,483
Events in quadrant B3,877,415631,598
Events in quadrant C11,586,19337,580
Events in quadrant D13,556,038110,756

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0456341
B0156101
C0385878
D0443921

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6034493181.720252%
B60352424.009942%
C6034572994.945310%
D6034503183.377527%

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 7049 6036 4421 4421 62.72% 73.24%
B 7050 6037 93 93 1.32% 1.54%
C 7049 6035 3062 3062 43.44% 50.74%
D 7049 6036 4398 4398 62.39% 72.86%

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 4 4 9006995 82170.56 424 413 109.6
A 3 130 1065841 9720.32 424 413 109.6
A 3 84 538243 4906.83 424 413 109.6
B 10 28 413769 2899.68 665 644 142.5
B 5 49 233933 1637.43 665 644 142.5
B 0 229 227794 1594.34 665 644 142.5
C 15 197 3238100 38387.17 207 201 84.3
C 15 147 1513410 17939.97 207 201 84.3
C 1 44 1298288 15389.57 207 201 84.3
D 7 61 4139165 37557.92 372 359 110.2
D 7 126 2289376 20771.87 372 359 110.2
D 14 66 886800 8044.08 372 359 110.2

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