ASTROSAT CZTI

Data Quality Report

Orbit 24917

Creation date: 2024-06-27T19:11:25.407128
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/AS1A08_003T16_9000003650_24917cztM0_level2.evt modeM0/AS1A08_003T16_9000003650_24917cztM0_level2_quad_clean.evt
Size (bytes)218,839,68055,967,040
Size208.7 MB 53.4 MB
Events in quadrant A1,571,488370,673
Events in quadrant B1,629,708374,306
Events in quadrant C1,586,565353,805
Events in quadrant D1,602,588350,548

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069330
B071460
C069390
D070980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A345720.057854%
B345820.057837%
C345880.231348%
D345840.115674%

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 3457 3457 0 0 0.00% 0.00%
B 3458 3458 0 0 0.00% 0.00%
C 3458 3458 0 0 0.00% 0.00%
D 3458 3458 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 5297 58.41 407 398 83.9
A 3 137 3830 40.92 407 398 83.9
A 0 226 3513 37.14 407 398 83.9
B 0 189 45973 584.05 400 391 78.0
B 12 111 9528 117.07 400 391 78.0
B 11 111 8501 103.91 400 391 78.0
C 14 238 62351 666.29 387 388 93.0
C 7 247 13487 140.85 387 388 93.0
C 13 61 2735 25.24 387 388 93.0
D 12 233 39499 404.81 395 383 96.6
D 1 52 30449 311.15 395 383 96.6
D 8 195 23431 238.53 395 383 96.6

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