ASTROSAT CZTI

Data Quality Report

Orbit 23804

Creation date: 2024-06-27T18:58:54.987481
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/AS1A07_113T01_9000003526_23804cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23804cztM0_level2_quad_clean.evt
Size (bytes)1,455,696,000153,653,760
Size1.4 GB 146.5 MB
Events in quadrant A5,753,6511,012,987
Events in quadrant B6,133,8861,043,378
Events in quadrant C5,903,3701,012,201
Events in quadrant D25,460,982728,027

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02553
B02564
C02551
D02564

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025511414
B026401398
C025708422
D0851851161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123651581.277800%
B123682021.633247%
C123672041.649551%
D12337827067.034125%

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 13721 12395 0 0 0.00% 0.00%
B 13722 12394 23 23 0.17% 0.19%
C 13722 12394 1 1 0.01% 0.01%
D 13720 12351 8130 8130 59.26% 65.82%

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 13 254 20695 63.92 1491 1458 301.0
A 3 137 13547 40.17 1491 1458 301.0
A 0 226 13064 38.56 1491 1458 301.0
B 3 64 237545 818.87 1488 1450 288.3
B 4 216 36612 121.96 1488 1450 288.3
B 12 111 35011 116.4 1488 1450 288.3
C 14 238 227734 670.33 1439 1449 337.6
C 7 247 33821 95.9 1439 1449 337.6
C 2 16 27128 76.07 1439 1449 337.6
D 8 195 16380209 61300.69 1095 1061 267.2
D 13 174 3933854 14718.89 1095 1061 267.2
D 1 52 877518 3280.23 1095 1061 267.2

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