ASTROSAT CZTI

Data Quality Report

Orbit 36073

Creation date: 2022-08-10T05:22:09.033391
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_36073cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36073cztM0_level2_quad_clean.evt
Size (bytes)442,800,00046,949,760
Size422.3 MB 44.8 MB
Events in quadrant A2,671,237270,744
Events in quadrant B3,134,112275,123
Events in quadrant C2,906,199267,764
Events in quadrant D4,345,658242,908

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108953
B0124022
C0113392
D0163452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A519480.154024%
B51941262.425876%
C5194851.636504%
D51944678.991144%

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 7316 5195 4 4 0.05% 0.08%
B 7316 5195 95 95 1.30% 1.83%
C 7316 5195 65 65 0.89% 1.25%
D 7316 5195 393 393 5.37% 7.56%

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 165862 1288.18 638 626 128.3
A 9 143 25389 193.05 638 626 128.3
A 13 254 8481 61.24 638 626 128.3
B 5 172 370979 3068.26 634 618 120.7
B 5 255 66313 544.25 634 618 120.7
B 8 128 54705 448.08 634 618 120.7
C 0 10 237298 1640.59 622 628 144.3
C 15 214 216942 1499.48 622 628 144.3
C 0 207 12681 83.55 622 628 144.3
D 12 17 968485 6689.61 595 579 144.7
D 1 52 237670 1638.64 595 579 144.7
D 12 227 221880 1529.5 595 579 144.7

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