ASTROSAT CZTI

Data Quality Report

Orbit 07426

Creation date: 2024-06-27T15:19:37.245116
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/AS1A02_150T04_9000001022_07426cztM0_level2.evt modeM0/AS1A02_150T04_9000001022_07426cztM0_level2_quad_clean.evt
Size (bytes)506,286,72092,986,560
Size482.8 MB 88.7 MB
Events in quadrant A3,161,618588,220
Events in quadrant B4,028,880597,851
Events in quadrant C4,233,859598,781
Events in quadrant D3,465,288575,432

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138103
B0162682
C0169322
D0147112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65351171.790360%
B65352153.289977%
C65351011.545524%
D65351482.264728%

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 9095 6537 1 1 0.01% 0.02%
B 9095 6537 68 68 0.75% 1.04%
C 9095 6537 2 2 0.02% 0.03%
D 9095 6537 41 41 0.45% 0.63%

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 15 234 13910 78.53 816 799 167.0
A 0 226 7948 42.82 816 799 167.0
A 12 194 7135 37.95 816 799 167.0
B 10 245 663424 4189.27 825 804 158.2
B 0 214 58642 365.67 825 804 158.2
B 4 170 36357 224.78 825 804 158.2
C 9 68 1072015 5708.33 810 815 187.7
C 13 61 6216 28.78 810 815 187.7
C 14 67 2028 6.46 810 815 187.7
D 2 14 201828 1018.53 806 783 197.4
D 2 136 68003 340.55 806 783 197.4
D 5 233 47885 238.63 806 783 197.4

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