ASTROSAT CZTI

Data Quality Report

Orbit 36302

Creation date: 2022-06-15T21:41:27.496108
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_089T02_9000005188_36302cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36302cztM0_level2_quad_clean.evt
Size (bytes)518,014,08085,720,320
Size494.0 MB 81.7 MB
Events in quadrant A2,908,466596,100
Events in quadrant B5,532,712499,820
Events in quadrant C3,122,209569,168
Events in quadrant D3,755,234548,961

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120473
B0199862
C0126472
D0146762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5450240.440367%
B5450113920.899083%
C5450751.376147%
D54511863.412218%

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 7303 5451 5 5 0.07% 0.09%
B 7302 5450 958 958 13.12% 17.58%
C 7303 5451 58 58 0.79% 1.06%
D 7304 5452 186 186 2.55% 3.41%

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 192905 1426.61 666 654 134.8
A 15 223 74618 548.85 666 654 134.8
A 13 6 22833 164.58 666 654 134.8
B 5 172 1898773 16988.09 584 571 111.7
B 5 236 649274 5805.61 584 571 111.7
B 4 171 474475 4241.24 584 571 111.7
C 15 214 230843 1570.81 629 634 146.6
C 0 10 213892 1455.15 629 634 146.6
C 0 207 197158 1340.97 629 634 146.6
D 12 6 381162 2429.39 634 614 156.6
D 7 223 271259 1727.78 634 614 156.6
D 2 250 230204 1465.69 634 614 156.6

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