ASTROSAT CZTI

Data Quality Report

Orbit 50944

Creation date: 2025-02-27T19:27:11.661770
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/AS1C07_001T01_9000006450_50944cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50944cztM0_level2_quad_clean.evt
Size (bytes)843,235,20073,356,480
Size804.2 MB 70.0 MB
Events in quadrant A11,531,094289,776
Events in quadrant B6,646,501545,741
Events in quadrant C7,320,717468,918
Events in quadrant D5,241,586488,357

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385641
B0239911
C0260631
D0197441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6130348856.900489%
B6130128520.962480%
C6131128420.942750%
D613171011.580493%

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 7165 6131 3157 3157 44.06% 51.49%
B 7165 6131 925 925 12.91% 15.09%
C 7166 6132 978 978 13.65% 15.95%
D 7166 6132 519 519 7.24% 8.46%

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 8 43 8253014 65131.28 503 489 126.7
A 12 3 351832 2772.9 503 489 126.7
A 9 13 192044 1511.81 503 489 126.7
B 4 81 2563874 19473.61 623 601 131.6
B 4 206 1058568 8037.55 623 601 131.6
B 4 171 214704 1626.58 623 601 131.6
C 5 10 1571458 9544.3 595 589 164.6
C 12 252 898301 5454.32 595 589 164.6
C 14 245 631323 3832.22 595 589 164.6
D 8 176 1255996 7223.98 618 594 173.8
D 3 12 504446 2899.32 618 594 173.8
D 2 62 398102 2287.39 618 594 173.8

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