ASTROSAT CZTI

Data Quality Report

Orbit 39404

Creation date: 2024-06-27T22:04:08.692649
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_018T01_9000005470_39404cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39404cztM0_level2_quad_clean.evt
Size (bytes)523,059,84077,342,400
Size498.8 MB 73.8 MB
Events in quadrant A2,896,471593,116
Events in quadrant B2,221,435618,036
Events in quadrant C2,986,169564,814
Events in quadrant D10,877,015221,900

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116143
B098642
C0120042
D0356602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4897450.918930%
B489720.040841%
C48971232.511742%
D4897317864.896876%

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 7019 4898 27 27 0.38% 0.55%
B 7019 4898 0 0 0.00% 0.00%
C 7019 4898 101 101 1.44% 2.06%
D 7019 4898 3052 3052 43.48% 62.31%

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 406239 3638.07 550 540 111.5
A 13 248 309225 2768.1 550 540 111.5
A 2 79 44383 393.16 550 540 111.5
B 0 190 25978 242.59 550 536 104.9
B 4 170 22690 211.24 550 536 104.9
B 12 111 13095 119.75 550 536 104.9
C 14 254 720826 5931.1 525 527 121.4
C 15 214 206254 1694.0 525 527 121.4
C 9 187 5010 36.91 525 527 121.4
D 12 235 8682664 95534.26 371 360 90.9
D 12 227 526390 5788.08 371 360 90.9
D 2 249 97162 1065.14 371 360 90.9

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