ASTROSAT CZTI

Data Quality Report

Orbit 35074

Creation date: 2022-03-25T00:23:03.242504
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/AS1T05_015T01_9000005026_35074cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35074cztM0_level2_quad_clean.evt
Size (bytes)466,015,68074,580,480
Size444.4 MB 71.1 MB
Events in quadrant A2,663,792481,501
Events in quadrant B3,134,420488,520
Events in quadrant C3,038,327489,373
Events in quadrant D4,938,932449,196

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109943
B0124292
C0121632
D0182252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A498670.140393%
B4986781.564380%
C4986881.764942%
D49862915.836342%

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 7108 4987 0 0 0.00% 0.00%
B 7108 4987 44 44 0.62% 0.88%
C 7108 4987 62 62 0.87% 1.24%
D 7108 4987 227 227 3.19% 4.55%

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 80647 610.68 665 654 131.0
A 13 6 9040 64.02 665 654 131.0
A 13 254 8410 59.21 665 654 131.0
B 5 172 231235 1886.45 659 644 122.2
B 0 189 176890 1441.85 659 644 122.2
B 15 85 71482 579.52 659 644 122.2
C 0 10 209955 1412.63 650 657 148.2
C 15 214 207498 1396.05 650 657 148.2
C 14 67 75719 506.62 650 657 148.2
D 8 195 1738722 11247.49 641 626 154.5
D 13 249 278321 1797.01 641 626 154.5
D 10 118 225512 1455.27 641 626 154.5

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