ASTROSAT CZTI

Data Quality Report

Orbit 20210324_A10_097T02_9000004272_level2

Creation date: 2021-03-26T13:24:17.662549
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_097T02_9000004272cztM0_level2_bc.evt modeM0/AS1A10_097T02_9000004272cztM0_level2_quad_clean.evt
Size (bytes)1,939,720,320582,402,240
Size1.8 GB 555.4 MB
Events in quadrant A9,410,8853,805,761
Events in quadrant B10,997,2193,854,369
Events in quadrant C10,107,4463,640,194
Events in quadrant D25,249,9883,339,096

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0916100
B0968120
C0959310
D01491440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08900
B08900
C08900
D08900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0930
B0930
C0930
D0930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A437164851.109434%
B437166721.537195%
C4371610982.511666%
D43716512511.723396%

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 52921 43711 0 0 0.00% 0.00%
B 52921 43709 4 4 0.01% 0.01%
C 52921 43711 6 6 0.01% 0.01%
D 52921 43708 1605 1605 3.03% 3.67%

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 76383 141.65 2425 2381 522.4
A 0 13 45984 83.46 2425 2381 522.4
A 0 226 15275 24.68 2425 2381 522.4
B 0 189 850502 1846.5 2447 2389 459.3
B 0 229 588534 1276.14 2447 2389 459.3
B 0 190 92477 196.14 2447 2389 459.3
C 3 233 550993 1012.66 2309 2299 541.8
C 10 22 472566 867.91 2309 2299 541.8
C 2 114 85164 152.93 2309 2299 541.8
D 7 80 12867437 25302.68 2224 2153 508.5
D 8 195 2554950 5020.69 2224 2153 508.5
D 2 250 486505 952.59 2224 2153 508.5

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