ASTROSAT CZTI

Data Quality Report

Orbit 36882

Creation date: 2024-06-27T21:32:45.873832
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_075T01_9000005244_36882cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36882cztM0_level2_quad_clean.evt
Size (bytes)437,414,40063,800,640
Size417.2 MB 60.8 MB
Events in quadrant A2,704,875535,708
Events in quadrant B778,7958,826
Events in quadrant C2,908,019546,459
Events in quadrant D6,505,837482,681

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113743
B051782
C0118192
D0228332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5084220.432730%
B50845084100.000000%
C5084851.671912%
D508489217.545240%

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 7056 5085 15 15 0.21% 0.29%
B 7055 5083 0 0 0.00% 0.00%
C 7056 5085 50 50 0.71% 0.98%
D 7056 5085 883 883 12.51% 17.36%

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 244806 1985.19 612 600 123.0
A 13 248 49311 395.98 612 600 123.0
A 9 143 16935 132.79 612 600 123.0
B 12 243 705197 175639.66 11 11 4.0
B 12 144 13108 3262.05 11 11 4.0
B 0 189 2108 522.3 11 11 4.0
C 0 10 230140 1646.5 606 612 139.4
C 15 214 214588 1534.94 606 612 139.4
C 0 207 47668 337.55 606 612 139.4
D 12 235 3650618 26615.6 568 555 137.1
D 13 249 230074 1673.61 568 555 137.1
D 2 249 160943 1169.52 568 555 137.1

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