ASTROSAT CZTI

Data Quality Report

Orbit 17927

Creation date: 2024-06-27T17:42:42.253534
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_025T01_9000002670_17927cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17927cztM0_level2_quad_clean.evt
Size (bytes)713,738,880154,019,520
Size680.7 MB 146.9 MB
Events in quadrant A5,502,727989,769
Events in quadrant B4,954,4121,017,787
Events in quadrant C4,921,385961,349
Events in quadrant D5,505,707949,030

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237042
B0218812
C0218062
D0240412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107831481.372531%
B10784910.843843%
C10784900.834570%
D107841241.149852%

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 12008 10785 41 41 0.34% 0.38%
B 12009 10786 3 3 0.02% 0.03%
C 12009 10786 0 0 0.00% 0.00%
D 12009 10786 82 82 0.68% 0.76%

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 701515 2798.19 1245 1217 250.3
A 3 254 13747 50.07 1245 1217 250.3
A 0 226 10705 37.91 1245 1217 250.3
B 12 111 28996 116.06 1251 1217 239.4
B 11 111 25155 100.01 1251 1217 239.4
B 0 189 21344 84.09 1251 1217 239.4
C 14 238 185024 656.96 1196 1199 279.8
C 3 233 64812 227.34 1196 1199 279.8
C 13 61 8518 26.16 1196 1199 279.8
D 12 110 325569 1110.64 1206 1172 292.1
D 7 238 257008 875.91 1206 1172 292.1
D 10 70 163878 557.06 1206 1172 292.1

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