ASTROSAT CZTI

Data Quality Report

Orbit 42501

Creation date: 2024-06-27T22:40:54.816109
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_001T10_9000005806_42501cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42501cztM0_level2_quad_clean.evt
Size (bytes)455,950,08079,813,440
Size434.8 MB 76.1 MB
Events in quadrant A2,882,157586,301
Events in quadrant B2,249,137594,247
Events in quadrant C8,131,526347,155
Events in quadrant D3,207,737522,815

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117282
B0105012
C0276122
D0132942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5229100.191241%
B522950.095621%
C5229222542.551157%
D52291312.505259%

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 7111 5230 5 5 0.07% 0.10%
B 7111 5230 1 1 0.01% 0.02%
C 7111 5230 2215 2215 31.15% 42.35%
D 7111 5230 112 112 1.58% 2.14%

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 555603 4756.71 568 556 116.7
A 12 189 61472 522.05 568 556 116.7
A 13 248 47722 404.21 568 556 116.7
B 5 255 27901 252.78 561 546 108.2
B 12 111 13571 120.36 561 546 108.2
B 11 111 12279 108.42 561 546 108.2
C 0 239 6155738 58447.52 451 452 105.3
C 15 214 188150 1782.29 451 452 105.3
C 9 54 18016 166.78 451 452 105.3
D 1 52 295653 2235.7 545 531 132.0
D 12 233 207619 1568.79 545 531 132.0
D 2 249 184711 1395.26 545 531 132.0

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