ASTROSAT CZTI

Data Quality Report

Orbit 40718

Creation date: 2024-06-27T22:19:32.051811
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_9000005558_40718cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40718cztM0_level2_quad_clean.evt
Size (bytes)401,051,52088,606,080
Size382.5 MB 84.5 MB
Events in quadrant A2,861,166608,566
Events in quadrant B2,476,087629,889
Events in quadrant C5,771,097573,839
Events in quadrant D3,318,311494,135

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119543
B0110832
C0207702
D0136702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5379160.297453%
B5379170.316044%
C53795019.313999%
D537969812.976390%

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 7112 5380 5 5 0.07% 0.09%
B 7112 5380 6 6 0.08% 0.11%
C 7112 5380 562 562 7.90% 10.45%
D 7112 5380 54 54 0.76% 1.00%

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 486591 3949.62 601 589 123.1
A 12 189 45709 366.68 601 589 123.1
A 13 254 7160 53.4 601 589 123.1
B 0 190 83495 711.38 601 584 116.6
B 5 255 20700 172.6 601 584 116.6
B 12 111 14995 123.65 601 584 116.6
C 9 187 3263981 24138.85 579 582 135.2
C 15 214 228951 1689.21 579 582 135.2
C 12 249 8611 59.39 579 582 135.2
D 1 52 265331 1925.1 553 537 137.5
D 2 250 183281 1328.58 553 537 137.5
D 6 239 177836 1289.0 553 537 137.5

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