ASTROSAT CZTI

Data Quality Report

Orbit 39020

Creation date: 2024-06-27T21:59:26.453767
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/AS1C07_001T02_9000005426_39020cztM0_level2.fits modeM0/AS1C07_001T02_9000005426_39020cztM0_level2_quad_clean.evt
Size (bytes)692,735,040183,695,040
Size660.6 MB 175.2 MB
Events in quadrant A7,062,9591,233,395
Events in quadrant B5,283,9261,266,589
Events in quadrant C5,279,2851,212,935
Events in quadrant D7,144,6621,070,792

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282794
B0236403
C0228353
D0293533

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A112401591.414591%
B11240810.720641%
C1124090.080071%
D112405905.249110%

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 15358 11243 112 112 0.73% 1.00%
B 15358 11243 51 51 0.33% 0.45%
C 15358 11242 1 1 0.01% 0.01%
D 15358 11243 580 580 3.78% 5.16%

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 6 10 873668 3480.76 1238 1211 250.7
A 10 83 770529 3069.27 1238 1211 250.7
A 9 143 222719 883.73 1238 1211 250.7
B 5 172 388128 1630.25 1233 1195 237.3
B 0 230 40208 164.37 1233 1195 237.3
B 12 111 30830 124.86 1233 1195 237.3
C 15 214 470270 1677.01 1211 1219 279.7
C 9 54 34535 119.12 1211 1219 279.7
C 1 128 20361 68.44 1211 1219 279.7
D 12 227 1653502 5720.31 1186 1152 288.9
D 2 249 498153 1720.58 1186 1152 288.9
D 12 235 118203 405.22 1186 1152 288.9

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