ASTROSAT CZTI

Data Quality Report

Orbit 41975

Creation date: 2024-06-27T22:35:13.997519
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/AS1A12_104T01_9000005728_41975cztM0_level2.fits modeM0/AS1A12_104T01_9000005728_41975cztM0_level2_quad_clean.evt
Size (bytes)567,956,160172,762,560
Size541.6 MB 164.8 MB
Events in quadrant A5,454,7961,142,664
Events in quadrant B4,743,2681,170,810
Events in quadrant C4,876,8721,130,117
Events in quadrant D5,114,2221,043,400

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229604
B0218393
C0215763
D0232023

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10745170.158213%
B10745180.167520%
C1074530.027920%
D10745770.716612%

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 13522 10747 3 3 0.02% 0.03%
B 13522 10747 2 2 0.01% 0.02%
C 13522 10747 0 0 0.00% 0.00%
D 13522 10747 53 53 0.39% 0.49%

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 985263 4214.12 1149 1128 233.5
A 13 6 17166 68.68 1149 1128 233.5
A 2 79 16665 66.53 1149 1128 233.5
B 0 190 126583 573.59 1143 1112 218.7
B 0 156 64413 289.38 1143 1112 218.7
B 0 229 29155 128.2 1143 1112 218.7
C 15 214 467802 1790.11 1129 1136 260.7
C 13 61 7632 24.92 1129 1136 260.7
C 0 207 4798 14.05 1129 1136 260.7
D 13 249 173516 635.99 1124 1095 271.1
D 12 6 165072 604.84 1124 1095 271.1
D 2 120 109769 400.85 1124 1095 271.1

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