ASTROSAT CZTI

Data Quality Report

Orbit 41339

Creation date: 2024-06-27T22:27:49.232314
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_101T03_9000005656_41339cztM0_level2.fits modeM0/AS1A12_101T03_9000005656_41339cztM0_level2_quad_clean.evt
Size (bytes)755,542,080205,225,920
Size720.5 MB 195.7 MB
Events in quadrant A6,495,2821,369,434
Events in quadrant B5,741,3751,401,629
Events in quadrant C7,460,9521,312,438
Events in quadrant D7,272,6181,241,176

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274293
B0263103
C0300813
D0308493

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12861300.233263%
B12861420.326569%
C128613782.939118%
D128613122.425939%

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 17066 12864 8 8 0.05% 0.06%
B 17066 12864 12 12 0.07% 0.09%
C 17066 12864 352 352 2.06% 2.74%
D 17066 12864 275 275 1.61% 2.14%

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 1043070 3668.41 1383 1356 284.0
A 2 79 81828 283.38 1383 1356 284.0
A 7 3 17766 57.79 1383 1356 284.0
B 5 255 163962 611.56 1373 1329 265.9
B 0 190 141393 526.69 1373 1329 265.9
B 12 111 34877 126.15 1373 1329 265.9
C 0 10 1235138 4031.38 1325 1331 306.1
C 15 214 533362 1738.37 1325 1331 306.1
C 7 220 407320 1326.54 1325 1331 306.1
D 13 249 812923 2511.06 1337 1298 323.2
D 5 222 633984 1957.44 1337 1298 323.2
D 6 112 330459 1018.38 1337 1298 323.2

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