ASTROSAT CZTI

Data Quality Report

Orbit 41028

Creation date: 2024-06-27T22:23:27.458596
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_029T02_9000005590_41028cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41028cztM0_level2_quad_clean.evt
Size (bytes)292,138,56085,484,160
Size278.6 MB 81.5 MB
Events in quadrant A2,741,982568,680
Events in quadrant B2,419,080586,814
Events in quadrant C2,722,510561,104
Events in quadrant D2,537,716518,612

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113163
B0104002
C0112312
D0111602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5034110.218514%
B503460.119190%
C5034801.589193%
D5034551.092571%

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 7007 5035 3 3 0.04% 0.06%
B 7007 5035 0 0 0.00% 0.00%
C 7007 5035 71 71 1.01% 1.41%
D 7007 5035 58 58 0.83% 1.15%

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 475136 4211.61 549 540 112.7
A 12 189 125967 1113.05 549 540 112.7
A 13 254 8202 67.99 549 540 112.7
B 0 229 214084 2000.71 550 534 106.7
B 0 245 31025 285.66 550 534 106.7
B 12 111 13535 121.8 550 534 106.7
C 15 214 218073 1707.55 542 546 127.4
C 0 10 192766 1508.9 542 546 127.4
C 14 254 123212 962.91 542 546 127.4
D 13 249 149617 1127.8 539 525 132.2
D 1 47 135858 1023.72 539 525 132.2
D 12 79 46982 351.42 539 525 132.2

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