ASTROSAT CZTI

Data Quality Report

Orbit 26150

Creation date: 2024-06-27T19:25:24.603761
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/AS1A09_138T04_9000003776_26150cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26150cztM0_level2_quad_clean.evt
Size (bytes)752,878,080125,729,280
Size718.0 MB 119.9 MB
Events in quadrant A7,801,300786,990
Events in quadrant B4,476,283827,089
Events in quadrant C4,524,309782,950
Events in quadrant D5,382,677778,718

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291810
B0189560
C0188370
D0220120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9108117412.889767%
B9109780.856296%
C91091061.163684%
D91091411.547920%

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 10653 9108 862 862 8.09% 9.46%
B 10654 9109 3 3 0.03% 0.03%
C 10654 9109 0 0 0.00% 0.00%
D 10654 9109 61 61 0.57% 0.67%

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 0 13 3713202 17320.12 1060 1037 214.3
A 13 254 13353 57.46 1060 1037 214.3
A 3 137 9851 41.12 1060 1037 214.3
B 0 190 74154 337.92 1115 1085 216.2
B 12 111 26113 115.74 1115 1085 216.2
B 11 111 23230 102.41 1115 1085 216.2
C 14 238 172144 675.98 1077 1082 253.1
C 13 250 79626 310.38 1077 1082 253.1
C 3 233 46203 178.3 1077 1082 253.1
D 1 52 1157008 4420.57 1089 1062 261.5
D 8 195 56384 211.56 1089 1062 261.5
D 2 234 40170 149.56 1089 1062 261.5

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