ASTROSAT CZTI

Data Quality Report

Orbit 34829

Creation date: 2022-03-08T10:27:12.849558
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_005T01_9000004992_34829cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34829cztM0_level2_quad_clean.evt
Size (bytes)795,954,24084,283,200
Size759.1 MB 80.4 MB
Events in quadrant A2,566,697671,460
Events in quadrant B11,131,446342,162
Events in quadrant C2,789,222673,568
Events in quadrant D7,284,132515,635

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105833
B0363712
C0108842
D0250672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4951100.201979%
B4951415183.841648%
C4951591.191678%
D4951177335.810947%

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 7074 4952 0 0 0.00% 0.00%
B 7073 4951 4069 4069 57.53% 82.19%
C 7074 4952 42 42 0.59% 0.85%
D 7074 4952 1645 1645 23.25% 33.22%

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 15 169 120429 981.18 611 601 122.1
A 10 83 49893 403.61 611 601 122.1
A 7 3 15217 119.68 611 601 122.1
B 5 14 3130901 51332.93 324 316 61.0
B 5 31 3098346 50799.12 324 316 61.0
B 5 15 3091947 50694.19 324 316 61.0
C 15 214 232023 1691.86 600 605 136.8
C 0 10 172544 1257.02 600 605 136.8
C 14 67 33835 242.94 600 605 136.8
D 14 52 4006180 31788.04 512 497 126.0
D 8 195 319963 2535.2 512 497 126.0
D 14 226 296681 2350.44 512 497 126.0

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