ASTROSAT CZTI

Data Quality Report

Orbit 42006

Creation date: 2024-06-27T22:35:39.325317
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_011T26_9000005732_42006cztM0_level2.fits modeM0/AS1A12_011T26_9000005732_42006cztM0_level2_quad_clean.evt
Size (bytes)305,922,24086,345,280
Size291.8 MB 82.3 MB
Events in quadrant A3,002,489571,345
Events in quadrant B2,568,661586,457
Events in quadrant C2,431,937566,662
Events in quadrant D2,903,113514,321

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121722
B0115772
C0107802
D0125612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5361280.522291%
B5361370.690170%
C536150.093266%
D53611152.145122%

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 7064 5362 22 22 0.31% 0.41%
B 7064 5361 13 13 0.18% 0.24%
C 7064 5361 0 0 0.00% 0.00%
D 7064 5362 93 93 1.32% 1.73%

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 10 83 565041 4787.19 570 557 117.9
A 15 235 90862 765.84 570 557 117.9
A 15 223 84468 711.62 570 557 117.9
B 4 171 166374 1494.71 569 554 110.9
B 5 255 72837 651.56 569 554 110.9
B 0 190 46868 417.48 569 554 110.9
C 15 214 221586 1676.72 561 564 131.8
C 7 220 8109 57.24 561 564 131.8
C 3 233 7423 52.03 561 564 131.8
D 13 249 344018 2533.67 553 537 135.6
D 10 199 169095 1243.36 553 537 135.6
D 1 52 57906 423.18 553 537 135.6

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