ASTROSAT CZTI

Data Quality Report

Orbit 41000

Creation date: 2024-06-27T22:23:10.468225
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/AS1A12_066T01_9000005584_41000cztM0_level2.fits modeM0/AS1A12_066T01_9000005584_41000cztM0_level2_quad_clean.evt
Size (bytes)329,757,12090,132,480
Size314.5 MB 86.0 MB
Events in quadrant A2,860,463612,185
Events in quadrant B2,505,472620,320
Events in quadrant C2,698,973585,358
Events in quadrant D3,715,687528,675

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118733
B0113262
C0114522
D0149332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A546790.164624%
B5467230.420706%
C5467530.969453%
D54672424.426559%

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 7111 5468 4 4 0.06% 0.07%
B 7110 5466 11 11 0.15% 0.20%
C 7110 5466 44 44 0.62% 0.80%
D 7110 5466 229 229 3.22% 4.19%

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 501903 4026.23 605 591 124.5
A 13 248 11381 86.65 605 591 124.5
A 13 254 7838 58.2 605 591 124.5
B 5 255 147448 1253.18 599 581 117.2
B 12 111 14845 121.71 599 581 117.2
B 11 111 14072 115.12 599 581 117.2
C 15 214 234682 1687.29 590 592 138.7
C 0 10 137436 986.35 590 592 138.7
C 12 249 15136 104.83 590 592 138.7
D 13 249 613201 4315.43 579 563 142.0
D 6 239 365377 2569.75 579 563 142.0
D 2 249 224212 1575.39 579 563 142.0

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