ASTROSAT CZTI

Data Quality Report

Orbit 34290

Creation date: 2022-01-31T09:59:08.898720
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/AS1T04_086T01_9000004890_34290cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34290cztM0_level2_quad_clean.evt
Size (bytes)481,072,32070,453,440
Size458.8 MB 67.2 MB
Events in quadrant A2,502,063450,564
Events in quadrant B3,317,581458,172
Events in quadrant C3,343,757446,407
Events in quadrant D5,057,869418,036

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106812
B0131281
C0128891
D0186091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A514290.175029%
B5142961.866978%
C51421763.422793%
D51422735.309218%

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 7054 5143 2 2 0.03% 0.04%
B 7054 5143 65 65 0.92% 1.26%
C 7054 5143 141 141 2.00% 2.74%
D 7054 5143 260 260 3.69% 5.06%

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 9 143 41733 330.51 625 612 124.4
A 10 83 23503 183.99 625 612 124.4
A 15 223 9399 70.63 625 612 124.4
B 5 172 381495 3234.58 625 609 117.8
B 4 251 169275 1432.36 625 609 117.8
B 0 229 101460 856.45 625 609 117.8
C 14 254 680868 4856.86 613 620 140.1
C 15 214 221014 1573.58 613 620 140.1
C 0 10 35098 246.17 613 620 140.1
D 8 195 1423420 8811.4 606 595 161.5
D 7 223 531021 3284.87 606 595 161.5
D 12 235 278799 1722.89 606 595 161.5

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