ASTROSAT CZTI

Data Quality Report

Orbit 13941

Creation date: 2024-06-27T16:48:14.034089
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/AS1T02_041T01_9000002058_13941cztM0_level2.evt modeM0/AS1T02_041T01_9000002058_13941cztM0_level2_quad_clean.evt
Size (bytes)606,591,360107,781,120
Size578.5 MB 102.8 MB
Events in quadrant A3,032,286695,053
Events in quadrant B4,843,498696,903
Events in quadrant C3,416,609741,037
Events in quadrant D6,621,505660,352

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138223
B0190522
C0146572
D0243662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6745160.237213%
B67453565.277984%
C6745460.681987%
D674573510.896961%

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 7586 6747 0 0 0.00% 0.00%
B 7585 6746 180 180 2.37% 2.67%
C 7586 6746 8 8 0.11% 0.12%
D 7586 6746 586 586 7.72% 8.69%

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 1 162 16631 100.92 776 762 157.2
A 0 226 6754 38.11 776 762 157.2
A 15 69 6204 34.61 776 762 157.2
B 10 245 1433757 9793.84 774 753 146.3
B 0 189 218682 1489.43 774 753 146.3
B 0 230 39451 264.48 774 753 146.3
C 3 233 250378 1397.29 778 782 178.6
C 4 254 130184 724.42 778 782 178.6
C 13 61 5652 27.26 778 782 178.6
D 1 52 3089510 17525.32 730 714 176.2
D 12 110 198260 1120.84 730 714 176.2
D 13 104 182904 1033.72 730 714 176.2

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