ASTROSAT CZTI

Data Quality Report

Orbit 15381

Creation date: 2024-06-27T17:07:45.459780
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/AS1C03_001T01_9000002270_15381cztM0_level2.evt modeM0/AS1C03_001T01_9000002270_15381cztM0_level2_quad_clean.evt
Size (bytes)507,870,72095,466,240
Size484.3 MB 91.0 MB
Events in quadrant A3,964,259592,177
Events in quadrant B4,048,656626,187
Events in quadrant C3,237,389617,297
Events in quadrant D3,678,243590,718

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161292
B0162371
C0136361
D0154201

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66604376.561562%
B66601161.741742%
C6660390.585586%
D66601372.057057%

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 7641 6661 207 207 2.71% 3.11%
B 7641 6661 30 30 0.39% 0.45%
C 7641 6661 0 0 0.00% 0.00%
D 7641 6661 81 81 1.06% 1.22%

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 14 238 731017 4680.22 768 751 156.0
A 3 80 121091 771.25 768 751 156.0
A 14 237 116740 743.37 768 751 156.0
B 8 3 526124 3489.3 789 770 150.6
B 10 245 183555 1214.02 789 770 150.6
B 10 16 80737 531.13 789 770 150.6
C 3 233 248623 1406.62 764 766 176.2
C 13 61 5483 26.77 764 766 176.2
C 7 247 5178 25.04 764 766 176.2
D 13 122 276291 1476.01 764 742 186.7
D 5 222 157497 839.68 764 742 186.7
D 7 38 109205 580.99 764 742 186.7

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