ASTROSAT CZTI

Data Quality Report

Orbit 45874

Creation date: 2024-06-27T23:17:10.802721
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/AS1C07_001T01_9000006136_45874cztM0_level2.fits modeM0/AS1C07_001T01_9000006136_45874cztM0_level2_quad_clean.evt
Size (bytes)306,463,68055,016,640
Size292.3 MB 52.5 MB
Events in quadrant A3,240,038374,949
Events in quadrant B3,988,892315,032
Events in quadrant C1,579,215386,670
Events in quadrant D2,260,824339,806

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119481
B0142741
C071621
D091121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A35271093.090445%
B352787924.922030%
C352790.255174%
D35261203.403290%

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 4252 3528 15 15 0.35% 0.43%
B 4252 3528 540 540 12.70% 15.31%
C 4252 3528 0 0 0.00% 0.00%
D 4251 3527 95 95 2.23% 2.69%

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 1606765 18730.17 403 392 85.8
A 7 3 23457 268.94 403 392 85.8
A 13 6 19977 228.36 403 392 85.8
B 3 112 2395384 32229.61 366 355 74.3
B 4 171 78962 1057.8 366 355 74.3
B 0 183 43033 574.31 366 355 74.3
C 14 254 4485 42.87 402 404 95.2
C 3 233 3559 33.14 402 404 95.2
C 13 61 2715 24.27 402 404 95.2
D 1 52 236535 2360.41 394 383 100.0
D 13 249 221209 2207.22 394 383 100.0
D 2 249 81683 812.62 394 383 100.0

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