ASTROSAT CZTI

Data Quality Report

Orbit 36155

Creation date: 2022-08-10T22:23:39.305911
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/AS1T04_069T01_9000005158_36155cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36155cztM0_level2_quad_clean.evt
Size (bytes)91,895,04019,258,560
Size87.6 MB 18.4 MB
Events in quadrant A571,127136,133
Events in quadrant B638,207130,695
Events in quadrant C749,841120,929
Events in quadrant D752,389117,428

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540203
B02877337
C03301428
D03296422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0242
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103460.580271%
B998242.404810%
C973282.877698%
D985505.076142%

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 1141 1111 0 0 0.00% 0.00%
B 1141 1102 7 7 0.61% 0.64%
C 1140 1091 30 30 2.63% 2.75%
D 1141 1092 38 38 3.33% 3.48%

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 61721 2237.47 125 123 27.5
A 8 144 16880 608.68 125 123 27.5
A 9 143 3409 119.36 125 123 27.5
B 5 172 119511 4705.38 118 115 25.4
B 4 171 13807 539.6 118 115 25.4
B 0 190 11469 447.46 118 115 25.4
C 15 208 194253 7090.3 109 110 27.4
C 0 10 73818 2691.89 109 110 27.4
C 15 214 44038 1604.29 109 110 27.4
D 12 17 79754 2694.28 112 109 29.6
D 1 52 60735 2050.89 112 109 29.6
D 2 249 58372 1970.95 112 109 29.6

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