ASTROSAT CZTI

Data Quality Report

Orbit 34697

Creation date: 2024-06-27T21:03:55.883907
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/AS1A07_138T08_9000004970_34697cztM0_level2.evt modeM0/AS1A07_138T08_9000004970_34697cztM0_level2_quad_clean.evt
Size (bytes)516,438,72074,033,280
Size492.5 MB 70.6 MB
Events in quadrant A2,669,372489,692
Events in quadrant B4,328,686464,505
Events in quadrant C2,770,389484,711
Events in quadrant D5,520,721439,260

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109362
B0161041
C0111571
D0198271

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5192200.385208%
B51925079.765023%
C5192130.250385%
D51924689.013867%

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 7286 5193 10 10 0.14% 0.19%
B 7286 5193 397 397 5.45% 7.64%
C 7286 5193 6 6 0.08% 0.12%
D 7286 5193 388 388 5.33% 7.47%

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 47598 368.1 648 637 127.6
A 9 143 38451 296.4 648 637 127.6
A 14 250 27386 209.67 648 637 127.6
B 5 172 1500876 12917.3 619 605 116.1
B 5 255 275288 2365.01 619 605 116.1
B 0 190 65611 559.7 619 605 116.1
C 15 214 222592 1571.65 618 622 141.2
C 0 10 61833 433.4 618 622 141.2
C 14 67 46799 326.96 618 622 141.2
D 8 195 1819638 12493.59 599 584 145.6
D 2 250 400515 2746.8 599 584 145.6
D 12 238 378903 2598.36 599 584 145.6

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