ASTROSAT CZTI

Data Quality Report

Orbit 34625

Creation date: 2022-02-23T11:17:13.030487
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_058T02_9000004954_34625cztM0_level2.evt modeM0/AS1A11_058T02_9000004954_34625cztM0_level2_quad_clean.evt
Size (bytes)442,863,36051,845,760
Size422.3 MB 49.4 MB
Events in quadrant A2,666,859311,103
Events in quadrant B3,215,371313,429
Events in quadrant C2,920,761298,978
Events in quadrant D4,264,042289,137

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107203
B0125472
C0113052
D0161812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A508950.098251%
B50891262.475928%
C5089711.395166%
D5089631.237964%

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 7213 5090 0 0 0.00% 0.00%
B 7213 5090 69 69 0.96% 1.36%
C 7213 5090 52 52 0.72% 1.02%
D 7213 5090 43 43 0.60% 0.84%

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 10 83 43748 327.37 669 660 131.6
A 13 6 18124 132.69 669 660 131.6
A 15 169 14711 106.76 669 660 131.6
B 5 172 500086 4073.78 650 635 122.6
B 10 245 42392 340.59 650 635 122.6
B 4 171 40001 321.09 650 635 122.6
C 0 10 225303 1562.37 628 633 143.8
C 15 214 214864 1489.78 628 633 143.8
C 14 67 20408 137.52 628 633 143.8
D 8 195 1453991 9229.32 641 622 157.5
D 12 6 79059 498.1 641 622 157.5
D 2 249 59245 372.27 641 622 157.5

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