ASTROSAT CZTI

Data Quality Report

Orbit 46631

Creation date: 2024-06-27T23:25:36.336618
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/AS1A13_080T02_9000006242_46631cztM0_level2.fits modeM0/AS1A13_080T02_9000006242_46631cztM0_level2_quad_clean.evt
Size (bytes)517,616,640100,422,720
Size493.6 MB 95.8 MB
Events in quadrant A6,139,011693,650
Events in quadrant B3,926,116696,167
Events in quadrant C2,768,711684,584
Events in quadrant D5,831,101520,930

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224411
B0161331
C0132931
D0218471

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63862153.366740%
B63872483.882887%
C6387310.485361%
D6387101015.813371%

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 7431 6387 111 111 1.49% 1.74%
B 7432 6388 187 187 2.52% 2.93%
C 7432 6388 16 16 0.22% 0.25%
D 7432 6388 818 818 11.01% 12.81%

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 3218592 22978.06 675 661 140.0
A 15 254 203512 1448.48 675 661 140.0
A 3 7 50572 356.4 675 661 140.0
B 15 201 753115 5757.46 663 643 130.7
B 5 32 456319 3486.56 663 643 130.7
B 8 234 28427 212.59 663 643 130.7
C 15 208 82401 532.93 657 661 153.4
C 14 254 47423 304.88 657 661 153.4
C 3 233 25485 161.85 657 661 153.4
D 12 233 2005328 13234.09 597 577 151.5
D 1 52 692699 4568.95 597 577 151.5
D 8 176 231758 1526.11 597 577 151.5

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