ASTROSAT CZTI

Data Quality Report

Orbit 39321

Creation date: 2024-06-27T22:03:12.996649
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_061T07_9000005468_39321cztM0_level2.fits modeM0/AS1A12_061T07_9000005468_39321cztM0_level2_quad_clean.evt
Size (bytes)525,870,72092,502,720
Size501.5 MB 88.2 MB
Events in quadrant A3,102,445662,397
Events in quadrant B2,974,106673,697
Events in quadrant C2,914,523649,306
Events in quadrant D10,021,142407,400

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127903
B0127562
C0121752
D0338392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5841230.393768%
B5841560.958740%
C584180.136963%
D5841226138.709125%

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 7214 5842 9 9 0.12% 0.15%
B 7214 5842 13 13 0.18% 0.22%
C 7214 5842 4 4 0.06% 0.07%
D 7214 5842 1998 1998 27.70% 34.20%

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 455810 3382.92 657 643 134.5
A 13 248 75843 558.91 657 643 134.5
A 15 222 22805 164.71 657 643 134.5
B 5 184 319969 2500.8 648 631 127.7
B 5 172 46113 356.18 648 631 127.7
B 0 197 25356 193.63 648 631 127.7
C 15 214 265962 1767.36 637 642 150.1
C 14 254 117410 777.82 637 642 150.1
C 9 187 47884 314.69 637 642 150.1
D 12 235 6200045 46911.52 534 519 132.2
D 5 222 1054085 7972.28 534 519 132.2
D 12 227 490339 3706.44 534 519 132.2

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