ASTROSAT CZTI

Data Quality Report

Orbit 37523

Creation date: 2024-06-27T21:41:04.736663
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/AS1A09_061T01_9000005330_37523cztM0_level2.evt modeM0/AS1A09_061T01_9000005330_37523cztM0_level2_quad_clean.evt
Size (bytes)426,695,04072,100,800
Size406.9 MB 68.8 MB
Events in quadrant A2,721,057458,174
Events in quadrant B2,844,217470,361
Events in quadrant C2,699,421464,887
Events in quadrant D4,314,103435,394

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113373
B0118662
C0111342
D0163642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5054450.890384%
B50541452.869015%
C5054521.028888%
D505462912.445588%

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 7057 5055 35 35 0.50% 0.69%
B 7057 5055 111 111 1.57% 2.20%
C 7057 5055 42 42 0.60% 0.83%
D 7057 5055 599 599 8.49% 11.85%

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 281676 2414.82 571 560 116.4
A 13 248 144756 1238.66 571 560 116.4
A 15 222 32172 271.55 571 560 116.4
B 5 172 439218 4002.85 569 556 109.6
B 0 190 47378 427.26 569 556 109.6
B 0 229 32454 291.07 569 556 109.6
C 15 214 216277 1628.65 561 565 132.4
C 14 254 149591 1125.16 561 565 132.4
C 0 10 105684 793.66 561 565 132.4
D 12 227 1288681 9947.65 524 510 129.5
D 13 249 439402 3389.26 524 510 129.5
D 2 249 282944 2181.04 524 510 129.5

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