ASTROSAT CZTI

Data Quality Report

Orbit 27186

Creation date: 2024-06-27T19:37:30.151982
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/AS1T03_243T01_9000003918_27186cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27186cztM0_level2_quad_clean.evt
Size (bytes)712,175,04092,594,880
Size679.2 MB 88.3 MB
Events in quadrant A3,327,672616,769
Events in quadrant B3,449,262631,575
Events in quadrant C3,270,742594,902
Events in quadrant D11,073,505498,897

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140970
B0143330
C0138360
D0374510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6610450.680787%
B6610671.013616%
C6610701.059002%
D6609242436.677258%

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 7570 6611 3 3 0.04% 0.05%
B 7570 6611 3 3 0.04% 0.05%
C 7570 6611 0 0 0.00% 0.00%
D 7569 6610 2552 2552 33.72% 38.61%

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 13 248 33175 192.43 839 824 168.1
A 15 174 20082 114.55 839 824 168.1
A 6 16 14780 83.01 839 824 168.1
B 3 112 81405 503.61 839 817 160.0
B 5 172 30410 184.93 839 817 160.0
B 0 190 22954 138.34 839 817 160.0
C 14 238 127799 676.15 801 808 187.8
C 2 16 9731 47.51 801 808 187.8
C 15 208 6472 30.16 801 808 187.8
D 1 52 7874917 45288.01 729 710 173.9
D 2 250 136715 782.22 729 710 173.9
D 7 38 108753 621.4 729 710 173.9

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