ASTROSAT CZTI

Data Quality Report

Orbit 42055

Creation date: 2024-06-27T22:36:16.382319
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_037T03_9000005738_42055cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42055cztM0_level2_quad_clean.evt
Size (bytes)352,903,68087,419,520
Size336.6 MB 83.4 MB
Events in quadrant A4,623,629561,645
Events in quadrant B2,431,151628,323
Events in quadrant C2,448,076584,229
Events in quadrant D3,167,464519,438

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171522
B0103962
C0101632
D0128422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50484639.171949%
B5048150.297147%
C504840.079239%
D50481923.803487%

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 7201 5049 357 357 4.96% 7.07%
B 7201 5049 7 7 0.10% 0.14%
C 7201 5049 0 0 0.00% 0.00%
D 7201 5049 155 155 2.15% 3.07%

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 1858435 15930.63 572 562 116.6
A 10 83 508797 4357.94 572 562 116.6
A 15 222 22741 190.18 572 562 116.6
B 5 255 56381 487.48 590 574 114.5
B 3 112 32612 279.86 590 574 114.5
B 0 229 23160 197.29 590 574 114.5
C 15 214 212170 1597.23 571 573 132.5
C 0 207 4843 32.23 571 573 132.5
C 13 61 3805 24.4 571 573 132.5
D 13 249 291846 2099.77 559 542 138.7
D 12 6 283030 2036.23 559 542 138.7
D 1 52 253607 1824.14 559 542 138.7

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