ASTROSAT CZTI

Data Quality Report

Orbit 39871

Creation date: 2024-06-27T22:09:41.995276
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/AS1A12_032T02_9000005500_39871cztM0_level2.fits modeM0/AS1A12_032T02_9000005500_39871cztM0_level2_quad_clean.evt
Size (bytes)426,864,96090,489,600
Size407.1 MB 86.3 MB
Events in quadrant A4,419,386563,052
Events in quadrant B4,302,459609,136
Events in quadrant C3,028,631613,116
Events in quadrant D3,610,273558,068

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166742
B0166581
C0125181
D0146371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56655529.744042%
B56653035.348632%
C5665410.723742%
D56651642.894969%

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 7068 5666 449 449 6.35% 7.92%
B 7068 5666 201 201 2.84% 3.55%
C 7068 5666 38 38 0.54% 0.67%
D 7068 5666 157 157 2.22% 2.77%

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 14 250 960391 7914.22 587 574 121.3
A 10 83 497461 4097.11 587 574 121.3
A 13 248 463126 3814.0 587 574 121.3
B 15 32 358659 3084.11 606 591 116.1
B 0 183 352096 3027.58 606 591 116.1
B 4 141 259966 2234.05 606 591 116.1
C 15 214 239420 1680.58 603 605 142.1
C 9 187 225607 1583.38 603 605 142.1
C 14 254 139222 975.47 603 605 142.1
D 13 171 471096 3189.84 599 581 147.5
D 13 249 136916 924.28 599 581 147.5
D 2 153 110168 742.94 599 581 147.5

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