ASTROSAT CZTI

Data Quality Report

Orbit 36038

Creation date: 2022-08-09T23:18:08.039274
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_069T01_9000005158_36038cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36038cztM0_level2_quad_clean.evt
Size (bytes)908,962,56097,862,400
Size866.9 MB 93.3 MB
Events in quadrant A4,424,181617,350
Events in quadrant B6,501,181590,752
Events in quadrant C10,086,829530,865
Events in quadrant D5,880,483571,894

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194503
B0254062
C0362202
D0240412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9402400.425441%
B94024684.977664%
C9402229624.420336%
D94022903.084450%

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 12357 9404 22 22 0.18% 0.23%
B 12357 9404 300 300 2.43% 3.19%
C 12357 9404 2015 2015 16.31% 21.43%
D 12357 9404 301 301 2.44% 3.20%

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 238178 1098.51 1063 1041 215.9
A 10 248 64648 294.65 1063 1041 215.9
A 13 254 14654 63.06 1063 1041 215.9
B 5 236 1359715 6793.91 1040 1013 200.0
B 0 190 516424 2577.2 1040 1013 200.0
B 0 213 346515 1727.61 1040 1013 200.0
C 9 187 6009734 28252.62 909 914 212.7
C 15 214 340931 1598.71 909 914 212.7
C 0 10 113044 527.22 909 914 212.7
D 1 52 544013 2183.54 1019 992 248.7
D 12 6 315631 1265.19 1019 992 248.7
D 8 230 242602 971.54 1019 992 248.7

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