ASTROSAT CZTI

Data Quality Report

Orbit 40277

Creation date: 2024-06-27T22:14:29.471897
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_056T02_9000005538_40277cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40277cztM0_level2_quad_clean.evt
Size (bytes)374,564,160100,477,440
Size357.2 MB 95.8 MB
Events in quadrant A3,276,244680,946
Events in quadrant B3,024,446686,743
Events in quadrant C2,976,681668,338
Events in quadrant D4,116,234583,307

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134523
B0131782
C0125052
D0165172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6054240.396432%
B60541242.048233%
C6054190.313842%
D60543756.194252%

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 8947 6056 12 12 0.13% 0.20%
B 8947 6056 78 78 0.87% 1.29%
C 8947 6056 12 12 0.13% 0.20%
D 8947 6056 319 319 3.57% 5.27%

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 519535 3773.46 674 660 137.5
A 13 248 88329 637.56 674 660 137.5
A 2 79 30889 219.84 674 660 137.5
B 5 255 332541 2581.49 667 648 128.6
B 0 245 24654 186.72 667 648 128.6
B 0 230 23636 178.8 667 648 128.6
C 15 214 257967 1660.29 663 667 155.0
C 14 254 101875 653.07 663 667 155.0
C 0 10 26794 168.59 663 667 155.0
D 12 227 803413 5080.39 643 624 158.0
D 2 250 372137 2351.09 643 624 158.0
D 2 249 211373 1333.71 643 624 158.0

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