ASTROSAT CZTI

Data Quality Report

Orbit 34261

Creation date: 2022-07-18T15:35:19.968317
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/AS1A11_059T09_9000004888_34261cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34261cztM0_level2_quad_clean.evt
Size (bytes)527,627,52062,772,480
Size503.2 MB 59.9 MB
Events in quadrant A2,651,125393,109
Events in quadrant B4,813,886389,452
Events in quadrant C3,741,615396,070
Events in quadrant D4,425,789363,010

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111400
B0176190
C0144570
D0166070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5120110.214844%
B512095618.671875%
C51202655.175781%
D51203246.328125%

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 7033 5121 4 4 0.06% 0.08%
B 7033 5121 782 782 11.12% 15.27%
C 7033 5121 205 205 2.91% 4.00%
D 7033 5121 262 262 3.73% 5.12%

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 7 16 37229 281.5 649 638 130.0
A 9 143 34748 262.41 649 638 130.0
A 15 169 31868 240.26 649 638 130.0
B 5 172 2392214 22376.63 572 559 106.9
B 0 189 46760 432.26 572 559 106.9
B 0 229 36404 335.37 572 559 106.9
C 0 207 617233 4303.74 628 636 143.3
C 15 214 221226 1539.68 628 636 143.3
C 0 239 141563 983.65 628 636 143.3
D 8 195 691145 4500.85 623 606 153.4
D 7 80 507585 3304.43 623 606 153.4
D 10 199 273928 1781.48 623 606 153.4

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