ASTROSAT CZTI

Data Quality Report

Orbit 34249

Creation date: 2022-07-18T14:36:08.447774
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_34249cztM0_level2.evt modeM0/AS1A11_059T09_9000004888_34249cztM0_level2_quad_clean.evt
Size (bytes)468,743,04095,996,160
Size447.0 MB 91.5 MB
Events in quadrant A2,963,918649,439
Events in quadrant B3,571,725659,829
Events in quadrant C3,247,724651,809
Events in quadrant D4,082,331604,530

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120520
B0136960
C0126520
D0154660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487360.123127%
B48733797.777550%
C48731964.022163%
D48733376.915658%

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 6997 4874 3 3 0.04% 0.06%
B 6997 4874 248 248 3.54% 5.09%
C 6997 4874 134 134 1.92% 2.75%
D 6997 4874 278 278 3.97% 5.70%

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 47 606809 5123.97 599 589 118.3
A 10 83 23622 194.68 599 589 118.3
A 9 143 12582 101.37 599 589 118.3
B 5 172 817591 7493.86 582 569 109.0
B 4 251 176487 1613.55 582 569 109.0
B 15 222 88401 805.61 582 569 109.0
C 0 10 337385 2534.19 579 584 132.9
C 0 207 252712 1897.09 579 584 132.9
C 15 214 208174 1561.97 579 584 132.9
D 7 80 868711 6178.27 570 555 140.5
D 8 195 645530 4589.99 570 555 140.5
D 13 249 135911 963.26 570 555 140.5

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