ASTROSAT CZTI

Data Quality Report

Orbit 38435

Creation date: 2024-06-27T21:52:42.650960
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_018T01_9000005386_38435cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38435cztM0_level2_quad_clean.evt
Size (bytes)401,880,96085,605,120
Size383.3 MB 81.6 MB
Events in quadrant A2,838,345597,495
Events in quadrant B2,969,001603,717
Events in quadrant C2,494,680583,497
Events in quadrant D6,182,996454,378

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116163
B0119842
C0103902
D0218552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5031440.874578%
B5031911.808786%
C5031170.337905%
D503198119.499106%

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 7094 5032 30 30 0.42% 0.60%
B 7094 5032 63 63 0.89% 1.25%
C 7094 5032 15 15 0.21% 0.30%
D 7094 5032 892 892 12.57% 17.73%

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 403648 3534.14 564 552 114.1
A 9 143 167361 1462.49 564 552 114.1
A 12 16 34562 298.18 564 552 114.1
B 0 229 207298 1939.52 561 546 106.6
B 4 232 189426 1771.86 561 546 106.6
B 5 184 169938 1589.05 561 546 106.6
C 15 214 213525 1647.56 559 563 129.3
C 0 10 72473 556.33 559 563 129.3
C 4 221 10679 78.26 559 563 129.3
D 2 16 2928656 22809.61 521 505 128.4
D 13 249 467705 3639.38 521 505 128.4
D 2 250 272958 2122.35 521 505 128.4

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