ASTROSAT CZTI

Data Quality Report

Orbit 34084

Creation date: 2024-06-27T20:56:21.023802
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/AS1A05_208T01_9000004870_34084cztM0_level2.evt modeM0/AS1A05_208T01_9000004870_34084cztM0_level2_quad_clean.evt
Size (bytes)1,354,115,520204,413,760
Size1.3 GB 194.9 MB
Events in quadrant A6,574,0341,335,098
Events in quadrant B11,099,0771,312,391
Events in quadrant C8,545,1671,323,093
Events in quadrant D13,824,5611,228,710

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02940
B02940
C02940
D02940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0490
C0490
D0490

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291223
B0426463
C0342073
D0509863

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14371220.153086%
B143717655.323220%
C143712051.426484%
D143718475.893814%

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 18551 14370 6 6 0.03% 0.04%
B 18551 14370 548 548 2.95% 3.81%
C 18551 14370 162 162 0.87% 1.13%
D 18551 14371 821 821 4.43% 5.71%

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 15 169 50469 144.49 1673 1637 338.0
A 10 83 33220 93.45 1673 1637 338.0
A 13 254 25920 71.85 1673 1637 338.0
B 5 31 2477590 7861.56 1636 1595 314.9
B 5 172 1136607 3603.79 1636 1595 314.9
B 5 15 590496 1869.83 1636 1595 314.9
C 0 10 881718 2344.46 1621 1640 375.4
C 15 214 610565 1622.13 1621 1640 375.4
C 3 233 429692 1140.3 1621 1640 375.4
D 8 195 2939708 7559.04 1596 1553 388.7
D 1 52 981149 2520.22 1596 1553 388.7
D 3 13 940632 2415.99 1596 1553 388.7

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