ASTROSAT CZTI

Data Quality Report

Orbit 12027

Creation date: 2024-06-27T16:21:34.311472
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/AS1A04_075T03_9000001780_12027cztM0_level2.evt modeM0/AS1A04_075T03_9000001780_12027cztM0_level2_quad_clean.evt
Size (bytes)227,972,16058,985,280
Size217.4 MB 56.3 MB
Events in quadrant A1,526,722401,212
Events in quadrant B1,901,230397,506
Events in quadrant C1,379,572393,189
Events in quadrant D1,883,708373,169

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065920
B075560
C063670
D075630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3105692.222222%
B31051675.378422%
C3105451.449275%
D3105932.995169%

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 3105 3105 3 3 0.10% 0.10%
B 3105 3105 78 78 2.51% 2.51%
C 3105 3105 0 0 0.00% 0.00%
D 3105 3105 44 44 1.42% 1.42%

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 1 162 36900 483.97 361 354 75.5
A 4 2 29450 385.31 361 354 75.5
A 1 178 18333 238.09 361 354 75.5
B 0 85 221632 3165.18 361 352 69.9
B 4 239 116920 1667.38 361 352 69.9
B 15 204 52617 747.6 361 352 69.9
C 13 61 2692 28.08 353 355 83.2
C 14 234 1033 8.15 353 355 83.2
C 3 202 893 6.46 353 355 83.2
D 1 52 189712 2301.72 344 335 82.3
D 4 95 101026 1223.81 344 335 82.3
D 8 195 81294 983.99 344 335 82.3

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