ASTROSAT CZTI

Data Quality Report

Orbit 11508

Creation date: 2024-06-27T16:13:58.242123
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_021T05_9000001686_11508cztM0_level2.evt modeM0/AS1A04_021T05_9000001686_11508cztM0_level2_quad_clean.evt
Size (bytes)598,032,000108,774,720
Size570.3 MB 103.7 MB
Events in quadrant A5,174,182694,379
Events in quadrant B4,742,551701,393
Events in quadrant C3,176,447743,042
Events in quadrant D4,572,922696,645

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198783
B0183842
C0136502
D0179072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65834687.109221%
B65834667.078839%
C6583721.093726%
D65833915.939541%

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 7764 6585 211 211 2.72% 3.20%
B 7764 6585 215 215 2.77% 3.26%
C 7764 6585 2 2 0.03% 0.03%
D 7764 6585 201 201 2.59% 3.05%

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 1835689 11266.78 816 799 162.9
A 14 238 45539 274.72 816 799 162.9
A 9 143 29265 174.79 816 799 162.9
B 4 239 1008774 6622.84 807 788 152.2
B 11 51 209333 1370.22 807 788 152.2
B 3 64 201195 1316.75 807 788 152.2
C 14 234 6605 30.72 813 818 188.4
C 13 61 6010 27.56 813 818 188.4
C 3 202 2126 6.94 813 818 188.4
D 10 253 520139 2738.89 798 777 189.6
D 1 52 263546 1385.73 798 777 189.6
D 2 120 236441 1242.79 798 777 189.6

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