ASTROSAT CZTI

Data Quality Report

Orbit 40454

Creation date: 2024-06-27T22:16:18.402305
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_022T01_9000005540_40454cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40454cztM0_level2_quad_clean.evt
Size (bytes)644,627,520176,869,440
Size614.8 MB 168.7 MB
Events in quadrant A5,654,6541,193,339
Events in quadrant B5,100,0381,226,674
Events in quadrant C5,478,7391,173,937
Events in quadrant D6,753,486982,166

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239004
B0232723
C0238913
D0280743

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11258140.124356%
B11258330.293125%
C112581090.968200%
D11258145912.959673%

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 15318 11261 4 4 0.03% 0.04%
B 15318 11261 5 5 0.03% 0.04%
C 15318 11261 74 74 0.48% 0.66%
D 15318 11261 285 285 1.86% 2.53%

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 911423 3755.64 1201 1178 242.4
A 3 1 42654 171.13 1201 1178 242.4
A 12 189 22656 88.62 1201 1178 242.4
B 3 112 185033 802.62 1191 1157 229.1
B 4 171 104377 450.56 1191 1157 229.1
B 0 230 87665 377.61 1191 1157 229.1
C 15 214 478366 1761.27 1168 1174 270.9
C 14 254 424296 1561.7 1168 1174 270.9
C 3 233 11587 38.43 1168 1174 270.9
D 12 227 817645 2997.42 1100 1066 272.4
D 12 128 628796 2304.21 1100 1066 272.4
D 12 191 360921 1320.92 1100 1066 272.4

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