ASTROSAT CZTI

Data Quality Report

Orbit 36726

Creation date: 2024-06-27T21:30:50.107136
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_101T01_9000005238_36726cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36726cztM0_level2_quad_clean.evt
Size (bytes)464,569,92061,047,360
Size443.0 MB 58.2 MB
Events in quadrant A2,537,697386,591
Events in quadrant B2,764,265398,243
Events in quadrant C3,451,589372,642
Events in quadrant D4,969,356332,587

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010785156
B011666180
C013579162
D018580281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01072
B01082
C01080
D01082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A510680.156678%
B5099410.804079%
C51032364.624731%
D508877315.192610%

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 7293 5158 0 0 0.00% 0.00%
B 7293 5144 19 19 0.26% 0.37%
C 7293 5150 196 196 2.69% 3.81%
D 7293 5138 838 838 11.49% 16.31%

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 217796 1805.91 596 586 120.3
A 13 254 8920 69.29 596 586 120.3
A 3 137 5883 44.04 596 586 120.3
B 4 171 140230 1220.26 589 576 114.4
B 0 189 99391 863.42 589 576 114.4
B 0 221 79509 689.7 589 576 114.4
C 14 254 567961 4361.78 562 565 130.1
C 0 10 460269 3533.91 562 565 130.1
C 15 214 227886 1747.5 562 565 130.1
D 1 20 2142489 15995.07 546 532 133.9
D 2 250 251796 1876.31 546 532 133.9
D 13 249 180043 1340.5 546 532 133.9

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