ASTROSAT CZTI

Data Quality Report

Orbit 39201

Creation date: 2024-06-27T22:01:43.753564
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/AS1A12_054T04_9000005446_39201cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39201cztM0_level2_quad_clean.evt
Size (bytes)74,943,36018,213,120
Size71.5 MB 17.4 MB
Events in quadrant A613,930127,594
Events in quadrant B503,421131,572
Events in quadrant C502,710120,289
Events in quadrant D1,074,63796,906

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024412
B021001
C020281
D038821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A98350.508647%
B98330.305188%
C98340.406918%
D98316516.785351%

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 983 983 1 1 0.10% 0.10%
B 983 983 1 1 0.10% 0.10%
C 983 983 2 2 0.20% 0.20%
D 983 983 127 127 12.92% 12.92%

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 133731 5055.48 121 118 26.4
A 9 143 5716 211.81 121 118 26.4
A 13 248 3977 146.01 121 118 26.4
B 5 172 21971 868.64 119 116 25.2
B 5 184 15516 612.08 119 116 25.2
B 12 111 2660 101.11 119 116 25.2
C 15 214 45498 1630.9 113 114 27.8
C 0 10 10235 363.7 113 114 27.8
C 1 241 1970 66.7 113 114 27.8
D 12 235 338263 12064.38 108 104 28.0
D 2 249 275327 9819.03 108 104 28.0
D 5 171 7388 259.87 108 104 28.0

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