ASTROSAT CZTI

Data Quality Report

Orbit 37987

Creation date: 2024-06-27T21:47:00.582250
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_082T01_9000005356_37987cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_37987cztM0_level2_quad_clean.evt
Size (bytes)401,230,08077,448,960
Size382.6 MB 73.9 MB
Events in quadrant A4,371,793519,243
Events in quadrant B2,936,064534,267
Events in quadrant C2,553,261529,154
Events in quadrant D4,586,765398,055

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167693
B0120662
C0106722
D0171812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5201701.345895%
B5201931.788118%
C5201100.192271%
D520184716.285330%

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 7054 5202 23 23 0.33% 0.44%
B 7054 5202 54 54 0.77% 1.04%
C 7054 5202 5 5 0.07% 0.10%
D 7054 5202 754 754 10.69% 14.49%

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 1467190 12156.78 593 580 120.6
A 10 83 381221 3155.15 593 580 120.6
A 12 16 109683 904.36 593 580 120.6
B 5 184 282973 2502.67 591 576 112.8
B 5 172 141556 1249.4 591 576 112.8
B 0 186 64769 568.89 591 576 112.8
C 15 214 222545 1652.72 581 585 134.3
C 14 254 30041 219.33 581 585 134.3
C 0 10 16000 114.78 581 585 134.3
D 12 233 1351875 10075.43 540 523 134.1
D 1 52 497380 3704.47 540 523 134.1
D 2 249 194128 1443.48 540 523 134.1

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