ASTROSAT CZTI

Data Quality Report

Orbit 42846

Creation date: 2024-06-27T22:44:56.335563
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_138T01_9000005828_42846cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42846cztM0_level2_quad_clean.evt
Size (bytes)442,664,64092,021,760
Size422.2 MB 87.8 MB
Events in quadrant A3,310,237628,620
Events in quadrant B4,565,891561,040
Events in quadrant C3,115,534648,585
Events in quadrant D4,949,019547,764

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133032
B0175832
C0127882
D0186092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5725380.663755%
B572579813.938865%
C5725591.030568%
D57255589.746725%

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 7369 5726 24 24 0.33% 0.42%
B 7368 5725 731 731 9.92% 12.77%
C 7369 5726 53 53 0.72% 0.93%
D 7369 5726 499 499 6.77% 8.71%

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 643312 4877.75 633 618 131.8
A 13 248 79497 598.66 633 618 131.8
A 15 237 59101 443.86 633 618 131.8
B 4 81 1702810 14895.54 584 568 114.3
B 5 255 508878 4447.99 584 568 114.3
B 0 245 33009 283.88 584 568 114.3
C 14 254 317123 2143.48 620 625 147.7
C 15 214 235018 1587.42 620 625 147.7
C 0 207 98588 663.45 620 625 147.7
D 1 52 1301428 8883.74 598 583 146.4
D 10 118 433570 2956.96 598 583 146.4
D 2 249 415289 2832.11 598 583 146.4

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