ASTROSAT CZTI

Data Quality Report

Orbit 32708

Creation date: 2024-06-27T20:41:03.986824
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/AS1T04_063T01_9000004724_32708cztM0_level2.evt modeM0/AS1T04_063T01_9000004724_32708cztM0_level2_quad_clean.evt
Size (bytes)1,497,965,760164,952,000
Size1.4 GB 157.3 MB
Events in quadrant A13,406,591963,489
Events in quadrant B7,987,3341,068,678
Events in quadrant C7,750,0821,052,045
Events in quadrant D15,253,348915,732

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02940
B02940
C02940
D02940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04984957
B03326532
C0325017
D05544854

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14395198113.761723%
B143961571.090581%
C144031200.833160%
D14393167711.651497%

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 17120 14405 1403 1403 8.20% 9.74%
B 17120 14403 61 61 0.36% 0.42%
C 17120 14406 86 86 0.50% 0.60%
D 17120 14404 1492 1492 8.71% 10.36%

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 15 249 5332324 16845.36 1575 1549 316.5
A 15 237 1749416 5523.29 1575 1549 316.5
A 10 228 49394 151.19 1575 1549 316.5
B 4 251 342826 1071.72 1699 1667 318.3
B 0 219 260408 812.81 1699 1667 318.3
B 0 199 219475 684.22 1699 1667 318.3
C 0 10 803628 2098.22 1640 1657 382.2
C 9 236 328845 856.03 1640 1657 382.2
C 0 207 67367 171.92 1640 1657 382.2
D 2 249 1901478 5092.51 1555 1522 373.1
D 8 195 1334208 3572.04 1555 1522 373.1
D 14 52 1251208 3349.57 1555 1522 373.1

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