ASTROSAT CZTI

Data Quality Report

Orbit 42737

Creation date: 2024-06-27T22:43:39.383926
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/AS1A05_013T01_9000005822_42737cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42737cztM0_level2_quad_clean.evt
Size (bytes)313,248,96090,961,920
Size298.7 MB 86.7 MB
Events in quadrant A2,942,402619,055
Events in quadrant B2,725,563630,298
Events in quadrant C2,745,155597,800
Events in quadrant D2,772,866539,768

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116952
B0115822
C0112492
D0119302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525390.171331%
B5253791.503903%
C5253190.361698%
D52531262.398629%

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 7316 5254 4 4 0.05% 0.08%
B 7316 5254 43 43 0.59% 0.82%
C 7316 5254 18 18 0.25% 0.34%
D 7316 5254 105 105 1.44% 2.00%

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 567663 4623.0 601 589 122.7
A 12 189 46488 374.19 601 589 122.7
A 13 254 6797 50.61 601 589 122.7
B 5 172 310535 2710.98 593 577 114.3
B 0 245 22234 189.42 593 577 114.3
B 0 156 18343 155.39 593 577 114.3
C 15 214 220607 1596.67 587 590 137.8
C 0 239 126620 914.6 587 590 137.8
C 0 207 52474 376.52 587 590 137.8
D 13 249 362613 2559.29 580 564 141.5
D 11 192 58504 409.57 580 564 141.5
D 2 249 39931 278.28 580 564 141.5

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