ASTROSAT CZTI

Data Quality Report

Orbit 34221

Creation date: 2022-01-27T09:41:55.365499
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/AS1T04_086T01_9000004884_34221cztM0_level2.evt modeM0/AS1T04_086T01_9000004884_34221cztM0_level2_quad_clean.evt
Size (bytes)987,425,28094,366,080
Size941.7 MB 90.0 MB
Events in quadrant A4,522,490558,147
Events in quadrant B9,522,397551,607
Events in quadrant C6,396,151563,083
Events in quadrant D8,834,807536,738

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190412
B0346182
C0246662
D0329042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9339170.182032%
B9339102210.943356%
C93393233.458614%
D93395075.428847%

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 13585 9341 1 1 0.01% 0.01%
B 13585 9341 692 692 5.09% 7.41%
C 13585 9341 286 286 2.11% 3.06%
D 13585 9341 506 506 3.72% 5.42%

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 9 143 34882 148.52 1147 1128 227.3
A 13 6 27612 116.53 1147 1128 227.3
A 10 83 25947 109.21 1147 1128 227.3
B 5 31 2254407 10705.75 1126 1099 210.5
B 5 172 1120974 5320.67 1126 1099 210.5
B 5 15 1006474 4776.66 1126 1099 210.5
C 14 254 467645 1814.67 1126 1139 257.1
C 15 214 399668 1550.25 1126 1139 257.1
C 9 187 396009 1536.02 1126 1139 257.1
D 10 118 1685404 6306.74 1105 1077 267.1
D 8 195 1111113 4156.38 1105 1077 267.1
D 2 250 667030 2493.57 1105 1077 267.1

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