ASTROSAT CZTI

Data Quality Report

Orbit 33417

Creation date: 2024-06-27T20:48:36.091769
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/AS1C07_001T03_9000004790_33417cztM0_level2.evt modeM0/AS1C07_001T03_9000004790_33417cztM0_level2_quad_clean.evt
Size (bytes)1,375,162,560206,755,200
Size1.3 GB 197.2 MB
Events in quadrant A7,143,2161,360,587
Events in quadrant B11,204,1741,289,468
Events in quadrant C8,587,8421,310,858
Events in quadrant D13,659,2591,223,281

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318224
B0437243
C0348393
D0515023

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15615170.108870%
B1561513488.632725%
C156152641.690682%
D156156524.175472%

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 19824 15618 0 0 0.00% 0.00%
B 19824 15618 1067 1067 5.38% 6.83%
C 19824 15618 210 210 1.06% 1.34%
D 19824 15618 561 561 2.83% 3.59%

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 15 47 158246 436.07 1800 1767 358.8
A 13 6 28532 74.59 1800 1767 358.8
A 13 254 25925 67.32 1800 1767 358.8
B 5 172 3580395 10888.48 1725 1677 328.7
B 0 213 284664 861.01 1725 1677 328.7
B 5 255 204489 617.07 1725 1677 328.7
C 15 214 663717 1669.8 1730 1744 396.4
C 9 187 425085 1067.86 1730 1744 396.4
C 0 10 283764 711.38 1730 1744 396.4
D 8 195 4207742 9962.53 1717 1666 422.2
D 14 173 1128325 2668.61 1717 1666 422.2
D 13 249 518259 1223.6 1717 1666 422.2

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