ASTROSAT CZTI

Data Quality Report

Orbit 35433

Creation date: 2022-04-22T12:29:49.074216
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_097T07_9000005072_35433cztM0_level2.evt modeM0/AS1A11_097T07_9000005072_35433cztM0_level2_quad_clean.evt
Size (bytes)574,107,84063,671,040
Size547.5 MB 60.7 MB
Events in quadrant A2,516,960410,384
Events in quadrant B6,978,636376,930
Events in quadrant C3,295,437399,079
Events in quadrant D4,243,135376,020

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108253
B0243832
C0130282
D0161202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A521270.134305%
B5212133725.652341%
C52121362.609363%
D52123196.120491%

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 7035 5213 1 1 0.01% 0.02%
B 7035 5213 954 954 13.56% 18.30%
C 7035 5213 103 103 1.46% 1.98%
D 7035 5213 279 279 3.97% 5.35%

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 123038 990.18 613 602 123.6
A 7 32 15410 119.76 613 602 123.6
A 13 254 8243 61.8 613 602 123.6
B 4 251 2649440 24651.11 564 551 107.5
B 5 236 1972767 18353.85 564 551 107.5
B 5 200 54835 505.18 564 551 107.5
C 0 10 330320 2385.6 594 598 138.2
C 0 207 275348 1987.86 594 598 138.2
C 15 214 213751 1542.2 594 598 138.2
D 7 80 1284350 8973.78 581 566 143.1
D 13 249 155770 1084.89 581 566 143.1
D 1 47 124258 864.62 581 566 143.1

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