ASTROSAT CZTI

Data Quality Report

Orbit 32816

Creation date: 2024-06-27T20:42:20.894712
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_044T01_9000004732_32816cztM0_level2.evt modeM0/AS1A11_044T01_9000004732_32816cztM0_level2_quad_clean.evt
Size (bytes)469,647,360100,388,160
Size447.9 MB 95.7 MB
Events in quadrant A2,407,595686,532
Events in quadrant B3,447,601684,809
Events in quadrant C2,678,827709,350
Events in quadrant D5,367,063625,772

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100272
B0132291
C0106421
D0194041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4748100.210615%
B47483296.929233%
C4748671.411120%
D474865113.711036%

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 6901 4749 3 3 0.04% 0.06%
B 6901 4749 202 202 2.93% 4.25%
C 6901 4749 51 51 0.74% 1.07%
D 6901 4749 566 566 8.20% 11.92%

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 10 228 89936 769.97 585 575 116.1
A 9 143 44473 378.24 585 575 116.1
A 13 254 9398 76.02 585 575 116.1
B 5 172 778264 7328.08 575 563 106.1
B 5 200 212300 1995.15 575 563 106.1
B 12 1 49978 465.63 575 563 106.1
C 0 10 204777 1523.33 587 593 134.0
C 15 159 38395 282.03 587 593 134.0
C 14 67 31355 229.5 587 593 134.0
D 8 195 1148632 8197.61 559 546 140.1
D 12 6 586401 4183.15 559 546 140.1
D 10 203 386331 2754.6 559 546 140.1

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