ASTROSAT CZTI

Data Quality Report

Orbit 11639

Creation date: 2024-06-27T16:16:16.036412
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/AS1A04_026T01_9000001712_11639cztM0_level2.evt modeM0/AS1A04_026T01_9000001712_11639cztM0_level2_quad_clean.evt
Size (bytes)749,329,92071,475,840
Size714.6 MB 68.2 MB
Events in quadrant A8,124,929389,587
Events in quadrant B4,169,647462,559
Events in quadrant C2,912,183448,834
Events in quadrant D7,055,608416,809

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285352
B0163931
C0130111
D0254681

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6380177727.852665%
B63803525.517241%
C6380791.238245%
D638067410.564263%

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 7336 6382 1298 1298 17.69% 20.34%
B 7336 6382 138 138 1.88% 2.16%
C 7336 6382 0 0 0.00% 0.00%
D 7336 6382 525 525 7.16% 8.23%

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 8 5 4974306 34836.66 701 688 142.8
A 1 162 167840 1170.78 701 688 142.8
A 1 178 94837 659.45 701 688 142.8
B 4 239 988148 6759.99 766 751 146.1
B 15 204 86736 588.68 766 751 146.1
B 0 219 64643 437.42 766 751 146.1
C 13 61 5598 28.15 745 746 172.4
C 8 128 4395 21.17 745 746 172.4
C 8 112 2672 11.17 745 746 172.4
D 13 152 2751364 15825.76 724 701 173.8
D 13 104 586439 3370.01 724 701 173.8
D 1 52 487568 2801.16 724 701 173.8

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