ASTROSAT CZTI

Data Quality Report

Orbit 22910

Creation date: 2024-06-27T18:47:21.089629
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/AS1A08_009T01_9000003382_22910cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22910cztM0_level2_quad_clean.evt
Size (bytes)458,573,760108,095,040
Size437.3 MB 103.1 MB
Events in quadrant A3,119,767712,414
Events in quadrant B3,191,066729,846
Events in quadrant C3,125,885700,951
Events in quadrant D4,007,024674,765

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135192
B0139022
C0137263
D0165792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6533330.505128%
B6533340.520435%
C6532831.270667%
D65321382.112676%

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 7623 6534 0 0 0.00% 0.00%
B 7623 6534 0 0 0.00% 0.00%
C 7622 6533 0 0 0.00% 0.00%
D 7622 6533 103 103 1.35% 1.58%

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 13 252 59681 371.37 791 774 158.6
A 13 254 10765 62.99 791 774 158.6
A 0 23 9694 56.24 791 774 158.6
B 3 64 34126 221.8 794 774 150.4
B 12 111 18210 115.95 794 774 150.4
B 11 111 16044 101.55 794 774 150.4
C 14 238 122527 683.67 767 770 178.1
C 7 247 5721 27.8 767 770 178.1
C 13 61 5312 25.5 767 770 178.1
D 1 52 735173 3950.21 765 742 185.9
D 12 233 263635 1414.0 765 742 185.9
D 13 153 39535 208.65 765 742 185.9

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