ASTROSAT CZTI

Data Quality Report

Orbit 36423

Creation date: 2022-07-19T02:38:02.597629
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_009T01_9000005200_36423cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36423cztM0_level2_quad_clean.evt
Size (bytes)411,209,28077,610,240
Size392.2 MB 74.0 MB
Events in quadrant A2,414,674517,402
Events in quadrant B3,956,563497,906
Events in quadrant C2,752,542501,790
Events in quadrant D2,986,990479,558

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104683
B0150802
C0112822
D0123282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A505280.158353%
B50524378.650040%
C50521112.197150%
D50521272.513856%

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 6963 5053 0 0 0.00% 0.00%
B 6963 5053 279 279 4.01% 5.52%
C 6963 5053 84 84 1.21% 1.66%
D 6963 5053 79 79 1.13% 1.56%

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 181161 1575.77 571 560 114.6
A 9 143 13505 112.95 571 560 114.6
A 13 254 8840 72.24 571 560 114.6
B 5 172 1169593 11128.95 548 534 105.0
B 5 255 330485 3140.99 548 534 105.0
B 4 232 87146 824.51 548 534 105.0
C 0 10 336123 2644.81 550 555 126.9
C 15 214 216739 1703.88 550 555 126.9
C 0 207 36306 281.77 550 555 126.9
D 12 6 246291 1870.42 550 537 131.4
D 2 137 147652 1119.68 550 537 131.4
D 2 250 125390 950.25 550 537 131.4

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