ASTROSAT CZTI

Data Quality Report

Orbit 22473

Creation date: 2024-06-27T18:41:40.436879
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/AS1A07_144T02_9000003340_22473cztM0_level2.evt modeM0/AS1A07_144T02_9000003340_22473cztM0_level2_quad_clean.evt
Size (bytes)1,166,440,320218,753,280
Size1.1 GB 208.6 MB
Events in quadrant A8,455,8991,359,809
Events in quadrant B8,524,0171,393,799
Events in quadrant C8,485,5861,335,600
Events in quadrant D8,651,5171,304,835

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0363693
B0367233
C0366383
D0380323

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178601090.610302%
B178611500.839819%
C178611791.002184%
D178601600.895857%

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 19760 17861 0 0 0.00% 0.00%
B 19761 17861 14 14 0.07% 0.08%
C 19761 17861 8 8 0.04% 0.04%
D 19760 17860 70 70 0.35% 0.39%

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 15 174 190298 438.01 2139 2089 429.7
A 3 1 27462 59.05 2139 2089 429.7
A 13 254 24075 51.17 2139 2089 429.7
B 4 52 58624 137.71 2129 2072 410.7
B 12 111 51117 119.43 2129 2072 410.7
B 0 190 47244 110.0 2129 2072 410.7
C 14 238 321504 660.59 2055 2065 483.6
C 10 22 129786 264.12 2055 2065 483.6
C 9 54 24651 46.71 2055 2065 483.6
D 1 52 510512 992.13 2085 2021 512.5
D 13 172 209435 404.69 2085 2021 512.5
D 2 234 75687 143.73 2085 2021 512.5

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