ASTROSAT CZTI

Data Quality Report

Orbit 49785

Creation date: 2024-12-12T11:20:21.831714
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_037T01_9000006440_49785cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49785cztM0_level2_quad_clean.evt
Size (bytes)1,056,962,88056,496,960
Size1008.0 MB 53.9 MB
Events in quadrant A8,650,578500,690
Events in quadrant B4,536,857700,133
Events in quadrant C8,381,8276,339
Events in quadrant D17,001,8828,013

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305981
B0184341
C0295804
D0553561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7118199127.971340%
B71184666.546783%
C7117706399.241253%
D7117704598.988338%

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 7263 7120 1442 1442 19.85% 20.25%
B 7263 7120 157 157 2.16% 2.21%
C 7261 7117 2094 2094 28.84% 29.42%
D 7261 7116 5989 5989 82.48% 84.16%

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 7 64 1540582 9043.0 687 670 170.3
A 3 99 1087627 6383.06 687 670 170.3
A 15 63 740128 4342.4 687 670 170.3
B 4 206 295377 1777.57 778 753 165.7
B 4 171 259993 1564.08 778 753 165.7
B 5 172 171594 1030.74 778 753 165.7
C 15 147 2534982 81365.43 82 80 31.2
C 15 198 1621239 52036.06 82 80 31.2
C 15 148 1076812 34561.01 82 80 31.2
D 8 129 4562566 74458.65 167 158 61.3
D 15 106 4078070 66551.66 167 158 61.3
D 15 142 3742045 61067.72 167 158 61.3

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