ASTROSAT CZTI

Data Quality Report

Orbit 37906

Creation date: 2024-06-27T21:45:59.294530
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/AS1T05_059T01_9000005354_37906cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37906cztM0_level2_quad_clean.evt
Size (bytes)611,366,40056,448,000
Size583.0 MB 53.8 MB
Events in quadrant A5,823,663239,157
Events in quadrant B3,980,845359,313
Events in quadrant C3,052,553375,093
Events in quadrant D5,258,879322,195

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210833
B0157472
C0126672
D0196372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5898132222.414378%
B58983856.527636%
C5898440.746016%
D589864610.952865%

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 8884 5900 1238 1238 13.94% 20.98%
B 8884 5900 263 263 2.96% 4.46%
C 8884 5900 36 36 0.41% 0.61%
D 8884 5900 515 515 5.80% 8.73%

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 15 222 3335485 29938.3 550 538 111.4
A 10 83 327842 2938.26 550 538 111.4
A 13 6 11860 101.64 550 538 111.4
B 5 172 360127 2878.49 644 628 124.9
B 4 81 348435 2784.88 644 628 124.9
B 5 184 295355 2359.87 644 628 124.9
C 15 214 247326 1627.44 642 646 151.6
C 14 254 180385 1185.81 642 646 151.6
C 0 10 110036 721.69 642 646 151.6
D 2 249 1439267 9656.59 610 592 149.0
D 1 52 564701 3786.38 610 592 149.0
D 7 223 283914 1901.7 610 592 149.0

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