ASTROSAT CZTI

Data Quality Report

Orbit 50179

Creation date: 2025-01-07T12:05:43.048355
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/AS1C09_003T01_9000006442_50179cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50179cztM0_level2_quad_clean.evt
Size (bytes)1,527,261,12052,505,280
Size1.4 GB 50.1 MB
Events in quadrant A15,002,987274,222
Events in quadrant B5,217,813687,125
Events in quadrant C17,045,78742,280
Events in quadrant D18,697,13468,937

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0496540
B0206980
C0556680
D0606330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7424484665.274784%
B74255337.178451%
C7425705294.976431%
D7424677591.258082%

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 7424 7424 4721 4721 63.59% 63.59%
B 7425 7425 409 409 5.51% 5.51%
C 7425 7425 5593 5593 75.33% 75.33%
D 7424 7424 6508 6508 87.66% 87.66%

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 0 98 10502189 70618.62 581 565 148.7
A 6 250 547698 3679.22 581 565 148.7
A 8 8 376412 2527.4 581 565 148.7
B 3 249 907410 5824.73 737 715 155.7
B 5 185 352193 2257.94 737 715 155.7
B 8 128 240316 1539.23 737 715 155.7
C 4 111 8414364 107175.01 246 242 78.5
C 15 197 1424652 18143.45 246 242 78.5
C 15 213 1128433 14370.35 246 242 78.5
D 15 168 6237251 53658.25 382 367 116.2
D 7 61 1749904 15051.92 382 367 116.2
D 15 106 1701365 14634.32 382 367 116.2

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