ASTROSAT CZTI

Data Quality Report

Orbit 41056

Creation date: 2024-06-27T22:23:53.784418
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_006T09_9000005592_41056cztM0_level2.fits modeM0/AS1A12_006T09_9000005592_41056cztM0_level2_quad_clean.evt
Size (bytes)304,611,84088,079,040
Size290.5 MB 84.0 MB
Events in quadrant A2,797,070601,640
Events in quadrant B2,812,045607,590
Events in quadrant C2,689,151567,536
Events in quadrant D2,580,938533,352

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113953
B0118072
C0111662
D0113422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5087130.255553%
B5087911.788874%
C5087861.690584%
D5087781.533320%

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 7208 5088 4 4 0.06% 0.08%
B 7208 5088 72 72 1.00% 1.42%
C 7208 5088 80 80 1.11% 1.57%
D 7208 5088 60 60 0.83% 1.18%

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 525483 4461.3 575 565 117.7
A 12 189 34639 289.6 575 565 117.7
A 13 254 9475 75.73 575 565 117.7
B 5 255 334904 3045.5 567 553 109.8
B 0 190 126228 1144.73 567 553 109.8
B 0 186 72944 659.38 567 553 109.8
C 15 214 231773 1806.94 546 549 128.0
C 0 10 200298 1560.97 546 549 128.0
C 14 254 110416 858.57 546 549 128.0
D 13 249 201309 1473.86 551 533 136.2
D 2 249 81400 593.63 551 533 136.2
D 12 233 69688 507.65 551 533 136.2

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