ASTROSAT CZTI

Data Quality Report

Orbit 54678

Creation date: 2025-11-06T08:07:14.453116
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/AS1A14_066T07_9000006522_54678cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54678cztM0_level2_quad_clean.evt
Size (bytes)485,956,80092,128,320
Size463.4 MB 87.9 MB
Events in quadrant A3,111,276624,843
Events in quadrant B3,166,858669,825
Events in quadrant C3,183,247593,224
Events in quadrant D8,029,534454,991

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139891
B0141241
C0142271
D0283091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64031071.671092%
B6403741.155708%
C6402681.062168%
D6403139721.817898%

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 7343 6404 49 49 0.67% 0.77%
B 7343 6404 7 7 0.10% 0.11%
C 7342 6403 23 23 0.31% 0.36%
D 7343 6403 1347 1347 18.34% 21.04%

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 7 14 116581 671.39 696 680 172.6
A 8 6 64784 371.34 696 680 172.6
A 11 3 63194 362.13 696 680 172.6
B 0 213 84229 555.73 695 669 150.4
B 7 0 83375 550.05 695 669 150.4
B 2 249 81500 537.58 695 669 150.4
C 4 5 208845 1100.25 682 678 189.2
C 6 223 58074 303.36 682 678 189.2
C 0 193 52706 274.99 682 678 189.2
D 11 129 3800475 21509.5 609 582 176.7
D 2 62 903017 5108.28 609 582 176.7
D 15 94 169481 956.06 609 582 176.7

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