ASTROSAT CZTI

Data Quality Report

Orbit 19727

Creation date: 2024-06-27T18:06:04.741579
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/AS1A05_013T01_9000002944_19727cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19727cztM0_level2_quad_clean.evt
Size (bytes)475,439,04095,774,400
Size453.4 MB 91.3 MB
Events in quadrant A3,081,154635,128
Events in quadrant B3,404,706649,393
Events in quadrant C3,344,092606,818
Events in quadrant D4,143,988572,419

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131412
B0140842
C0138253
D0166602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6262230.367295%
B6262450.718620%
C6261460.734707%
D62612514.008944%

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 7572 6263 0 0 0.00% 0.00%
B 7572 6263 11 11 0.15% 0.18%
C 7571 6262 3 3 0.04% 0.05%
D 7571 6262 205 205 2.71% 3.27%

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 7123 38.84 800 784 163.2
A 0 226 6938 37.71 800 784 163.2
A 3 137 6111 32.64 800 784 163.2
B 0 189 71483 467.92 805 786 151.1
B 3 64 58278 380.52 805 786 151.1
B 0 197 35153 227.47 805 786 151.1
C 3 233 213752 1208.01 761 767 176.3
C 14 238 121683 685.81 761 767 176.3
C 7 247 35259 195.63 761 767 176.3
D 1 52 605532 3330.53 748 725 181.6
D 12 218 370103 2034.08 748 725 181.6
D 10 199 183426 1006.09 748 725 181.6

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