ASTROSAT CZTI

Data Quality Report

Orbit 00727

Creation date: 2024-06-27T14:02:07.685123
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_010T01_9000000108_00727cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00727cztM0_level2_quad_clean.evt
Size (bytes)1,208,675,52079,623,360
Size1.1 GB 75.9 MB
Events in quadrant A8,403,792505,347
Events in quadrant B8,716,843511,103
Events in quadrant C7,972,391501,890
Events in quadrant D11,073,207429,513

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297384
B0306243
C0283943
D0378063

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66252223.350943%
B66261392.097797%
C66261392.097797%
D6626137020.676124%

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 6795 6628 518 518 7.62% 7.82%
B 6796 6629 489 489 7.20% 7.38%
C 6796 6629 381 381 5.61% 5.75%
D 6796 6629 1839 1839 27.06% 27.74%

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 15 171 267807 517.55 2098 2112 513.4
A 15 17 48913 91.16 2098 2112 513.4
A 10 230 19563 33.99 2098 2112 513.4
B 7 221 203077 386.56 2196 2200 519.6
B 5 191 75176 140.43 2196 2200 519.6
B 0 220 39366 71.52 2196 2200 519.6
C 15 241 39232 65.71 2012 2084 565.4
C 3 111 31644 52.29 2012 2084 565.4
C 3 79 20599 32.75 2012 2084 565.4
D 9 52 3699012 6534.09 1807 1866 565.8
D 6 226 311198 546.69 1807 1866 565.8
D 7 207 172487 301.54 1807 1866 565.8

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