ASTROSAT CZTI

Data Quality Report

Orbit 17885

Creation date: 2024-06-27T17:42:11.729733
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/AS1T03_075T01_9000002660_17885cztM0_level2.evt modeM0/AS1T03_075T01_9000002660_17885cztM0_level2_quad_clean.evt
Size (bytes)833,829,120134,213,760
Size795.2 MB 128.0 MB
Events in quadrant A5,946,643808,115
Events in quadrant B6,086,791823,289
Events in quadrant C5,999,872791,555
Events in quadrant D6,371,913776,729

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258354
B0259993
C0256453
D0273323

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125001381.104000%
B125001491.192000%
C125001861.488000%
D125002512.008000%

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 14200 12501 3 3 0.02% 0.02%
B 14200 12501 12 12 0.08% 0.10%
C 14200 12500 0 0 0.00% 0.00%
D 14200 12501 136 136 0.96% 1.09%

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 6 16 68129 217.75 1518 1486 306.1
A 15 174 43029 135.74 1518 1486 306.1
A 0 226 13258 38.46 1518 1486 306.1
B 15 222 69834 236.65 1510 1471 288.9
B 0 189 35893 119.16 1510 1471 288.9
B 12 111 35451 117.63 1510 1471 288.9
C 14 238 225370 654.24 1453 1460 342.2
C 3 233 89139 256.19 1453 1460 342.2
C 9 54 18582 50.03 1453 1460 342.2
D 7 38 311256 864.83 1467 1424 358.3
D 7 238 192529 533.43 1467 1424 358.3
D 13 168 90176 247.73 1467 1424 358.3

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