ASTROSAT CZTI

Data Quality Report

Orbit 36024

Creation date: 2022-08-09T20:44:14.188960
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/AS1T04_069T01_9000005158_36024cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36024cztM0_level2_quad_clean.evt
Size (bytes)487,275,84065,378,880
Size464.7 MB 62.4 MB
Events in quadrant A2,656,337424,616
Events in quadrant B4,143,386378,126
Events in quadrant C3,038,580406,212
Events in quadrant D4,543,207382,953

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115153
B0159702
C0125672
D0173512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5536120.216763%
B553664711.687139%
C55361041.878613%
D55363476.268064%

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 7150 5537 0 0 0.00% 0.00%
B 7150 5537 529 529 7.40% 9.55%
C 7150 5537 82 82 1.15% 1.48%
D 7150 5537 300 300 4.20% 5.42%

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 173468 1328.81 634 621 130.1
A 15 232 17256 127.89 634 621 130.1
A 13 254 8762 62.59 634 621 130.1
B 5 172 1467417 12746.41 596 580 115.1
B 4 171 131613 1138.64 596 580 115.1
B 5 255 103676 895.88 596 580 115.1
C 0 10 262436 1850.41 606 611 141.5
C 15 214 230203 1622.61 606 611 141.5
C 9 187 168931 1189.58 606 611 141.5
D 12 235 1107140 7463.17 599 582 148.3
D 1 52 317292 2136.04 599 582 148.3
D 12 17 217043 1459.92 599 582 148.3

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