ASTROSAT CZTI

Data Quality Report

Orbit 41628

Creation date: 2024-06-27T22:30:21.806641
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_035T02_9000005676_41628cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41628cztM0_level2_quad_clean.evt
Size (bytes)905,785,920160,188,480
Size863.8 MB 152.8 MB
Events in quadrant A5,593,5981,137,307
Events in quadrant B5,188,0991,150,501
Events in quadrant C5,593,6261,114,203
Events in quadrant D16,339,324719,289

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226954
B0227073
C0231863
D0557213

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10516350.332826%
B105161391.321795%
C105161371.302777%
D10516379236.059338%

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 13232 10518 18 18 0.14% 0.17%
B 13232 10518 78 78 0.59% 0.74%
C 13232 10518 123 123 0.93% 1.17%
D 13232 10517 3492 3492 26.39% 33.20%

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 941446 3950.58 1170 1144 238.0
A 13 248 46946 192.43 1170 1144 238.0
A 7 3 38248 155.89 1170 1144 238.0
B 5 255 609421 2720.54 1154 1124 223.6
B 12 111 29158 125.38 1154 1124 223.6
B 11 111 27032 115.87 1154 1124 223.6
C 15 214 458096 1729.56 1136 1143 264.2
C 0 10 419807 1584.63 1136 1143 264.2
C 0 15 266215 1003.29 1136 1143 264.2
D 12 79 10478982 42298.89 1002 970 247.7
D 13 249 1056452 4260.9 1002 970 247.7
D 1 47 544183 2192.91 1002 970 247.7

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