ASTROSAT CZTI

Data Quality Report

Orbit 54443

Creation date: 2025-10-21T09:16:51.147840
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/AS1A14_126T19_9000006518_54443cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54443cztM0_level2_quad_clean.evt
Size (bytes)530,507,52090,858,240
Size505.9 MB 86.6 MB
Events in quadrant A2,699,892628,304
Events in quadrant B2,864,137679,049
Events in quadrant C4,386,139598,692
Events in quadrant D9,189,995398,113

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130322
B0133962
C0174272
D0317292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6400180.281250%
B6400430.671875%
C64001181.843750%
D6400209132.671875%

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 7555 6401 0 0 0.00% 0.00%
B 7555 6401 7 7 0.09% 0.11%
C 7555 6401 107 107 1.42% 1.67%
D 7555 6401 1916 1916 25.36% 29.93%

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 4 3 25735 148.35 681 663 169.0
A 13 254 15450 87.49 681 663 169.0
A 11 3 11258 62.69 681 663 169.0
B 10 247 64439 437.76 677 653 145.7
B 0 213 46629 315.53 677 653 145.7
B 5 185 36002 242.6 677 653 145.7
C 4 5 1124377 6103.02 661 654 184.1
C 13 3 311698 1689.3 661 654 184.1
C 2 255 127337 688.02 661 654 184.1
D 8 176 4519429 28340.18 556 530 159.5
D 7 70 1113280 6978.59 556 530 159.5
D 2 172 1077463 6753.96 556 530 159.5

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