ASTROSAT CZTI

Data Quality Report

Orbit 43458

Creation date: 2024-06-27T22:52:12.164081
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_018T01_9000005874_43458cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43458cztM0_level2_quad_clean.evt
Size (bytes)405,915,84086,353,920
Size387.1 MB 82.4 MB
Events in quadrant A3,587,170581,369
Events in quadrant B2,964,610613,384
Events in quadrant C2,523,449586,497
Events in quadrant D5,554,695476,559

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139772
B0123792
C0107682
D0201052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50901653.241650%
B5090190.373281%
C5090200.392927%
D509077415.206287%

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 5091 165 165 2.34% 3.24%
B 7064 5091 7 7 0.10% 0.14%
C 7064 5091 16 16 0.23% 0.31%
D 7064 5091 789 789 11.17% 15.50%

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 601231 5329.93 549 538 112.7
A 15 222 469903 4164.66 549 538 112.7
A 15 237 315931 2798.47 549 538 112.7
B 3 112 260041 2423.53 561 546 107.1
B 0 189 184679 1719.7 561 546 107.1
B 0 245 149279 1389.08 561 546 107.1
C 15 214 224781 1780.9 553 557 125.9
C 15 159 74550 587.69 553 557 125.9
C 3 233 42808 335.58 553 557 125.9
D 1 52 2454902 19703.05 514 500 124.6
D 2 16 376858 3021.27 514 500 124.6
D 1 47 291662 2337.34 514 500 124.6

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