ASTROSAT CZTI

Data Quality Report

Orbit 25477

Creation date: 2024-06-27T19:18:06.388877
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/AS1A09_085T02_9000003716_25477cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25477cztM0_level2_quad_clean.evt
Size (bytes)250,623,36071,432,640
Size239.0 MB 68.1 MB
Events in quadrant A1,633,593498,628
Events in quadrant B1,630,730497,771
Events in quadrant C2,408,870459,327
Events in quadrant D1,693,598475,650

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067870
B067720
C092420
D070530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A326010.030675%
B326110.030665%
C32612527.727691%
D326100.000000%

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 3260 3260 0 0 0.00% 0.00%
B 3261 3261 1 1 0.03% 0.03%
C 3261 3261 181 181 5.55% 5.55%
D 3261 3261 1 1 0.03% 0.03%

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 13 254 4339 46.46 423 416 84.4
A 0 226 3670 38.54 423 416 84.4
A 3 137 3445 35.87 423 416 84.4
B 0 190 15651 194.26 410 403 78.5
B 12 111 8801 106.99 410 403 78.5
B 11 111 7977 96.49 410 403 78.5
C 2 16 826066 9226.6 387 391 89.5
C 14 238 63390 703.99 387 391 89.5
C 7 87 5941 62.02 387 391 89.5
D 1 52 43313 427.09 414 403 100.5
D 2 244 38497 379.16 414 403 100.5
D 8 195 33230 326.74 414 403 100.5

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