ASTROSAT CZTI

Data Quality Report

Orbit 41672

Creation date: 2024-06-27T22:31:23.216283
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/AS1T05_117T01_9000005684_41672cztM0_level2.fits modeM0/AS1T05_117T01_9000005684_41672cztM0_level2_quad_clean.evt
Size (bytes)371,090,88091,906,560
Size353.9 MB 87.6 MB
Events in quadrant A3,196,311616,968
Events in quadrant B2,515,232636,615
Events in quadrant C3,220,051596,073
Events in quadrant D4,358,665532,033

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129262
B0114972
C0132242
D0169092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5732220.383810%
B573240.069784%
C57321292.250523%
D57323896.786462%

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 5733 10 10 0.14% 0.17%
B 7316 5733 0 0 0.00% 0.00%
C 7316 5733 124 124 1.69% 2.16%
D 7316 5733 379 379 5.18% 6.61%

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 560487 4292.3 631 617 130.4
A 15 223 120419 918.47 631 617 130.4
A 13 248 25678 192.13 631 617 130.4
B 0 190 33084 264.93 626 609 122.6
B 12 111 15911 124.83 626 609 122.6
B 11 111 14872 116.36 626 609 122.6
C 14 254 309309 2146.59 606 608 143.8
C 0 10 286090 1985.14 606 608 143.8
C 15 214 233546 1619.76 606 608 143.8
D 13 249 953146 6477.03 601 585 147.1
D 2 249 588361 3996.64 601 585 147.1
D 2 120 342195 2322.81 601 585 147.1

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