ASTROSAT CZTI

Data Quality Report

Orbit 38868

Creation date: 2024-06-27T21:57:27.851827
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_077T06_9000005408_38868cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38868cztM0_level2_quad_clean.evt
Size (bytes)348,269,76090,953,280
Size332.1 MB 86.7 MB
Events in quadrant A2,681,500620,870
Events in quadrant B2,463,273646,013
Events in quadrant C2,447,575619,530
Events in quadrant D4,919,717525,618

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110003
B0103402
C0101492
D0179702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4878140.287003%
B4878240.492005%
C4878110.225502%
D48784278.753588%

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 7000 4879 6 6 0.09% 0.12%
B 7000 4879 11 11 0.16% 0.23%
C 7000 4879 7 7 0.10% 0.14%
D 7000 4879 431 431 6.16% 8.83%

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 376940 3234.54 572 562 116.4
A 13 248 83065 709.02 572 562 116.4
A 13 254 10485 85.28 572 562 116.4
B 4 171 158533 1434.81 574 561 110.1
B 0 230 21087 186.43 574 561 110.1
B 12 111 13499 117.51 574 561 110.1
C 15 214 202642 1546.21 566 572 130.7
C 14 254 17336 128.28 566 572 130.7
C 0 10 15794 116.48 566 572 130.7
D 5 222 1090455 8404.19 537 525 129.7
D 2 250 1014010 7814.75 537 525 129.7
D 12 227 416351 3206.34 537 525 129.7

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