ASTROSAT CZTI

Data Quality Report

Orbit 20160317_T01_057T01_9000000380_level2

Creation date: 2025-10-28T18:46:07.295952
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/AS1T01_057T01_9000000380cztM0_level2.fits modeM0/AS1T01_057T01_9000000380cztM0_level2_quad_clean.evt
Size (bytes)22,835,52037,373,760
Size21.8 MB 35.6 MB
Events in quadrant A133,516245,640
Events in quadrant B126,954244,138
Events in quadrant C129,524234,792
Events in quadrant D110,346215,210

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053730
B056630
C055490
D063420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A267840.149365%
B267850.186706%
C267820.074683%
D2678311.157580%

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 2678 2678 0 0 0.00% 0.00%
B 2678 2678 0 0 0.00% 0.00%
C 2678 2678 0 0 0.00% 0.00%
D 2678 2678 0 0 0.00% 0.00%

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 0 29 147 10.5 34 32 11.0
A 14 188 145 10.32 34 32 11.0
A 14 204 122 8.22 34 32 11.0
B 2 9 116 9.26 33 32 9.1
B 12 226 108 8.38 33 32 9.1
B 5 225 98 7.28 33 32 9.1
C 12 241 105 6.67 34 31 11.1
C 9 188 103 6.49 34 31 11.1
C 7 111 103 6.49 34 31 11.1
D 4 160 97 6.74 31 28 10.2
D 1 19 97 6.74 31 28 10.2
D 4 144 85 5.57 31 28 10.2

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