ASTROSAT CZTI

Data Quality Report

Orbit 11825

Creation date: 2024-06-27T16:18:47.139191
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_022T07_9000001748_11825cztM0_level2.evt modeM0/AS1A04_022T07_9000001748_11825cztM0_level2_quad_clean.evt
Size (bytes)472,772,16084,375,360
Size450.9 MB 80.5 MB
Events in quadrant A3,133,799535,017
Events in quadrant B4,080,274539,594
Events in quadrant C2,939,307545,744
Events in quadrant D3,745,535503,896

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133503
B0161352
C0127022
D0153382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6169370.599773%
B61692754.457773%
C6169120.194521%
D61691282.074891%

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 7545 6171 0 0 0.00% 0.00%
B 7545 6171 141 141 1.87% 2.28%
C 7545 6171 0 0 0.00% 0.00%
D 7545 6171 92 92 1.22% 1.49%

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 1 162 79173 514.2 760 746 152.5
A 1 178 41805 269.2 760 746 152.5
A 1 161 37023 237.84 760 746 152.5
B 4 239 667901 4706.0 761 745 141.8
B 3 64 259613 1826.01 761 745 141.8
B 0 214 53066 369.06 761 745 141.8
C 13 61 5467 27.05 752 758 174.1
C 14 234 2716 11.25 752 758 174.1
C 8 222 2553 10.31 752 758 174.1
D 1 52 480317 2714.36 732 712 176.7
D 13 104 197530 1113.91 732 712 176.7
D 5 222 71943 403.14 732 712 176.7

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