ASTROSAT CZTI

Data Quality Report

Orbit 37375

Creation date: 2024-06-27T21:39:10.309503
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/AS1T05_048T01_9000005318_37375cztM0_level2.evt modeM0/AS1T05_048T01_9000005318_37375cztM0_level2_quad_clean.evt
Size (bytes)1,994,682,240236,655,360
Size1.9 GB 225.7 MB
Events in quadrant A11,578,8861,426,918
Events in quadrant B13,747,8771,456,034
Events in quadrant C11,922,2511,453,147
Events in quadrant D21,620,7691,256,902

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0484846
B0554915
C0489345
D0799125

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04680
B04680
C04680
D04680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22860920.402450%
B228608553.740157%
C228601350.590551%
D2286020458.945757%

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 31823 22865 59 59 0.19% 0.26%
B 31823 22865 584 584 1.84% 2.55%
C 31823 22865 98 98 0.31% 0.43%
D 31823 22864 2078 2078 6.53% 9.09%

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 962363 1824.04 2650 2602 526.2
A 13 248 137572 256.51 2650 2602 526.2
A 10 255 60707 110.43 2650 2602 526.2
B 5 255 1775565 3593.27 2625 2561 493.4
B 5 172 440375 887.3 2625 2561 493.4
B 0 190 438730 883.96 2625 2561 493.4
C 15 214 950460 1580.07 2605 2633 599.9
C 14 254 309309 511.24 2605 2633 599.9
C 0 10 239686 395.18 2605 2633 599.9
D 12 235 5353395 8883.29 2499 2432 602.4
D 1 20 3035044 5034.53 2499 2432 602.4
D 2 249 1439505 2385.73 2499 2432 602.4

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