ASTROSAT CZTI

Data Quality Report

Orbit 36841

Creation date: 2024-06-27T21:32:15.317959
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_075T01_9000005244_36841cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36841cztM0_level2_quad_clean.evt
Size (bytes)479,424,96083,073,600
Size457.2 MB 79.2 MB
Events in quadrant A2,509,161541,914
Events in quadrant B5,464,898541,301
Events in quadrant C2,868,382555,734
Events in quadrant D3,334,791522,523

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107233
B0197042
C0115462
D0133542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A505570.138477%
B50554268.427300%
C5055931.839763%
D50551082.136499%

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 9272 5057 4 4 0.04% 0.08%
B 9272 5057 275 275 2.97% 5.44%
C 9272 5057 75 75 0.81% 1.48%
D 9272 5057 99 99 1.07% 1.96%

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 214562 1824.07 581 570 117.3
A 13 6 14952 122.59 581 570 117.3
A 9 143 13857 113.26 581 570 117.3
B 12 1 2533917 23713.08 572 559 106.8
B 0 213 177242 1653.81 572 559 106.8
B 5 172 167552 1563.11 572 559 106.8
C 15 214 230580 1726.34 572 576 133.2
C 0 10 227943 1706.54 572 576 133.2
C 14 254 169902 1270.91 572 576 133.2
D 1 20 246670 1806.47 562 548 136.2
D 2 250 235723 1726.13 562 548 136.2
D 12 233 156780 1146.7 562 548 136.2

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