ASTROSAT CZTI

Data Quality Report

Orbit 32902

Creation date: 2024-06-27T20:43:15.555597
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/AS1A11_007T06_9000004746_32902cztM0_level2.evt modeM0/AS1A11_007T06_9000004746_32902cztM0_level2_quad_clean.evt
Size (bytes)562,248,00068,497,920
Size536.2 MB 65.3 MB
Events in quadrant A2,461,415450,428
Events in quadrant B3,037,610456,065
Events in quadrant C2,885,717454,015
Events in quadrant D8,308,369365,939

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102073
B0119712
C0115572
D0281142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4945160.323559%
B49451843.720930%
C4945891.799798%
D4945131226.531850%

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 7068 4946 17 17 0.24% 0.34%
B 7068 4945 114 114 1.61% 2.31%
C 7068 4946 74 74 1.05% 1.50%
D 7068 4946 1583 1583 22.40% 32.01%

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 9 143 42773 340.73 618 608 123.8
A 14 63 19923 156.08 618 608 123.8
A 13 254 8656 65.03 618 608 123.8
B 5 172 440926 3816.19 615 601 115.4
B 0 219 50322 430.92 615 601 115.4
B 0 197 42158 360.16 615 601 115.4
C 0 10 279227 2016.17 606 613 138.2
C 14 67 134759 970.74 606 613 138.2
C 3 233 65633 470.51 606 613 138.2
D 12 227 3618045 25083.41 551 542 144.2
D 8 195 1107351 7674.5 551 542 144.2
D 10 203 424546 2940.0 551 542 144.2

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