ASTROSAT CZTI

Data Quality Report

Orbit 04906

Creation date: 2024-06-27T14:48:40.352710
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/AS1G05_237T01_9000000620_04906cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04906cztM0_level2_quad_clean.evt
Size (bytes)811,696,32062,772,480
Size774.1 MB 59.9 MB
Events in quadrant A3,398,362425,490
Events in quadrant B3,348,999425,624
Events in quadrant C3,083,703421,896
Events in quadrant D14,319,025181,160

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138022
B0135331
C0130681
D0468331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6376821.286073%
B6376711.113551%
C6376460.721455%
D6376563988.441029%

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 7651 6376 3 3 0.04% 0.05%
B 7651 6376 1 1 0.01% 0.02%
C 7651 6376 0 0 0.00% 0.00%
D 7650 6375 5348 5348 69.91% 83.89%

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 8 15 74500 443.74 823 807 166.1
A 0 31 61041 362.7 823 807 166.1
A 13 251 49730 294.59 823 807 166.1
B 15 204 42942 271.69 820 804 155.1
B 15 54 42361 267.94 820 804 155.1
B 5 6 40906 258.56 820 804 155.1
C 13 61 6316 30.48 789 796 181.1
C 8 222 2640 10.18 789 796 181.1
C 9 54 2275 8.17 789 796 181.1
D 2 63 11704197 117365.51 396 384 99.7
D 2 33 615528 6168.65 396 384 99.7
D 2 234 95079 949.6 396 384 99.7

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