ASTROSAT CZTI

Data Quality Report

Orbit 20210827_C06_010T03_9000004672_level2

Creation date: 2021-08-28T12:45:00.969674
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/AS1C06_010T03_9000004672cztM0_level2_bc.evt modeM0/AS1C06_010T03_9000004672cztM0_level2_quad_clean.evt
Size (bytes)1,108,448,640378,325,440
Size1.0 GB 360.8 MB
Events in quadrant A4,208,8062,696,504
Events in quadrant B11,393,8562,580,970
Events in quadrant C6,009,5282,493,670
Events in quadrant D10,723,7042,440,706

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375440
B0629830
C0443280
D0605500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180972621.447754%
B1809715218.404708%
C180979875.453943%
D1809711766.498315%

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 21446 18093 0 0 0.00% 0.00%
B 21445 18092 271 271 1.26% 1.50%
C 21446 18093 178 178 0.83% 0.98%
D 21446 18092 148 148 0.69% 0.82%

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 13 254 32063 134.03 1079 1070 231.2
A 14 238 27127 112.68 1079 1070 231.2
A 13 6 11331 44.37 1079 1070 231.2
B 6 159 4608154 23163.6 1043 1025 198.9
B 10 245 2002991 10065.43 1043 1025 198.9
B 5 172 242499 1214.08 1043 1025 198.9
C 0 10 1881667 8004.98 999 1003 234.9
C 3 233 165244 699.09 999 1003 234.9
C 4 175 58212 243.51 999 1003 234.9
D 11 164 3153357 13532.76 1029 1006 232.9
D 12 218 802047 3438.8 1029 1006 232.9
D 8 195 741104 3177.17 1029 1006 232.9

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