ASTROSAT CZTI

Data Quality Report

Orbit 38215

Creation date: 2024-06-27T21:49:52.088630
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/AS1A07_145T01_9000005370_38215cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38215cztM0_level2_quad_clean.evt
Size (bytes)307,195,20094,127,040
Size293.0 MB 89.8 MB
Events in quadrant A2,788,221628,983
Events in quadrant B2,568,099660,125
Events in quadrant C2,738,178633,133
Events in quadrant D2,888,894579,472

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113223
B0106242
C0110192
D0116782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4979280.562362%
B4979110.220928%
C4979220.441856%
D4979410.823459%

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 7041 4980 22 22 0.31% 0.44%
B 7041 4980 2 2 0.03% 0.04%
C 7041 4980 16 16 0.23% 0.32%
D 7041 4980 37 37 0.53% 0.74%

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 361707 3012.97 591 580 119.9
A 13 248 66668 551.39 591 580 119.9
A 12 189 27334 223.22 591 580 119.9
B 0 183 147821 1302.72 598 583 113.0
B 0 218 19262 165.27 598 583 113.0
B 12 111 13841 117.3 598 583 113.0
C 15 214 210908 1543.04 590 597 136.3
C 9 236 76110 554.03 590 597 136.3
C 14 254 75846 552.1 590 597 136.3
D 10 203 166664 1162.14 586 572 142.9
D 13 138 120093 836.28 586 572 142.9
D 13 249 63774 442.22 586 572 142.9

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