ASTROSAT CZTI

Data Quality Report

Orbit 00664

Creation date: 2024-06-27T14:01:15.126428
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/AS1P01_124T01_9000000094_00664cztM0_level2.evt modeM0/AS1P01_124T01_9000000094_00664cztM0_level2_quad_clean.evt
Size (bytes)781,689,60050,973,120
Size745.5 MB 48.6 MB
Events in quadrant A6,210,274298,296
Events in quadrant B5,887,891307,570
Events in quadrant C5,322,790302,356
Events in quadrant D5,919,526284,082

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220202
B0210582
C0193572
D0211562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5001671.339732%
B5001270.539892%
C500150.099980%
D50011452.899420%

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 7157 5002 270 270 3.77% 5.40%
B 7157 5002 112 112 1.56% 2.24%
C 7157 5002 30 30 0.42% 0.60%
D 7157 5002 316 316 4.42% 6.32%

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 12 133 468618 1487.59 1431 1416 314.1
A 12 236 108279 340.26 1431 1416 314.1
A 13 190 22959 68.59 1431 1416 314.1
B 4 172 115737 334.83 1471 1479 341.2
B 5 191 54853 156.41 1471 1479 341.2
B 4 82 16891 45.16 1471 1479 341.2
C 3 159 22668 56.36 1343 1393 377.5
C 15 241 12369 29.08 1343 1393 377.5
C 9 52 10302 23.6 1343 1393 377.5
D 1 4 588068 1487.56 1253 1296 394.5
D 13 216 157950 397.14 1253 1296 394.5
D 13 221 130527 327.62 1253 1296 394.5

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