ASTROSAT CZTI

Data Quality Report

Orbit 14475

Creation date: 2024-06-27T16:55:41.643473
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/AS1G08_083T01_9000002134_14475cztM0_level2.evt modeM0/AS1G08_083T01_9000002134_14475cztM0_level2_quad_clean.evt
Size (bytes)420,621,12097,827,840
Size401.1 MB 93.3 MB
Events in quadrant A3,013,821639,728
Events in quadrant B3,265,532647,096
Events in quadrant C3,069,537636,607
Events in quadrant D2,969,756608,185

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130043
B0136482
C0129302
D0132732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6174230.372530%
B6174691.117590%
C6174170.275348%
D6174250.404924%

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 7510 6176 2 2 0.03% 0.03%
B 7510 6176 12 12 0.16% 0.19%
C 7510 6176 0 0 0.00% 0.00%
D 7510 6176 15 15 0.20% 0.24%

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 12 189 108536 716.32 751 736 150.5
A 9 143 12117 75.63 751 736 150.5
A 0 226 6808 40.35 751 736 150.5
B 0 85 104790 742.69 756 739 140.1
B 15 222 83853 593.24 756 739 140.1
B 0 189 27770 192.94 756 739 140.1
C 3 233 146734 871.72 733 736 167.5
C 0 207 59348 349.96 733 736 167.5
C 13 61 5365 27.64 733 736 167.5
D 2 152 122752 653.91 717 700 186.6
D 15 0 51846 274.02 717 700 186.6
D 10 199 37321 196.2 717 700 186.6

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