ASTROSAT CZTI

Data Quality Report

Orbit 38962

Creation date: 2024-06-27T21:58:41.151673
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/AS1T05_064T01_9000005416_38962cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38962cztM0_level2_quad_clean.evt
Size (bytes)689,693,760175,847,040
Size657.7 MB 167.7 MB
Events in quadrant A5,705,8011,175,048
Events in quadrant B5,091,1781,206,335
Events in quadrant C5,557,5381,152,533
Events in quadrant D8,337,2481,041,207

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234184
B0224023
C0232343
D0322873

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10820400.369686%
B10820610.563771%
C108201101.016636%
D108203833.539741%

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 13566 10822 32 32 0.24% 0.30%
B 13566 10822 39 39 0.29% 0.36%
C 13566 10822 109 109 0.80% 1.01%
D 13566 10822 366 366 2.70% 3.38%

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 769219 3173.06 1202 1177 242.1
A 13 248 242308 996.2 1202 1177 242.1
A 13 6 23207 91.01 1202 1177 242.1
B 5 172 211808 913.4 1195 1163 230.6
B 0 230 110913 475.9 1195 1163 230.6
B 15 85 58519 248.71 1195 1163 230.6
C 14 254 471210 1720.11 1171 1176 273.3
C 15 214 442004 1613.23 1171 1176 273.3
C 12 249 60207 216.03 1171 1176 273.3
D 12 235 2040393 7265.44 1157 1122 280.7
D 2 249 909681 3236.98 1157 1122 280.7
D 12 227 318318 1130.09 1157 1122 280.7

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