ASTROSAT CZTI

Data Quality Report

Orbit 39131

Creation date: 2024-06-27T22:00:48.694733
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_025T11_9000005438_39131cztM0_level2.fits modeM0/AS1A12_025T11_9000005438_39131cztM0_level2_quad_clean.evt
Size (bytes)387,676,80088,110,720
Size369.7 MB 84.0 MB
Events in quadrant A3,624,557592,666
Events in quadrant B2,414,874611,826
Events in quadrant C2,819,383579,347
Events in quadrant D5,088,501520,513

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144583
B0106282
C0115362
D0186222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51891222.351127%
B518980.154172%
C5189350.674504%
D51893396.533051%

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 7041 5190 78 78 1.11% 1.50%
B 7041 5190 3 3 0.04% 0.06%
C 7041 5190 17 17 0.24% 0.33%
D 7041 5190 254 254 3.61% 4.89%

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 15 223 474678 4028.06 584 573 117.7
A 10 83 424062 3598.02 584 573 117.7
A 14 235 278070 2357.65 584 573 117.7
B 0 190 40189 348.17 585 569 113.8
B 5 172 32622 281.67 585 569 113.8
B 5 184 18718 159.49 585 569 113.8
C 9 187 328911 2427.16 573 577 135.3
C 15 214 216784 1598.28 573 577 135.3
C 0 10 23246 167.58 573 577 135.3
D 12 235 2310151 16641.67 562 547 138.8
D 5 222 228297 1641.03 562 547 138.8
D 12 33 138135 991.38 562 547 138.8

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