ASTROSAT CZTI

Data Quality Report

Orbit 10896

Creation date: 2024-06-27T16:05:19.326196
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/AS1A04_055T01_9000001574_10896cztM0_level2.evt modeM0/AS1A04_055T01_9000001574_10896cztM0_level2_quad_clean.evt
Size (bytes)566,749,440102,479,040
Size540.5 MB 97.7 MB
Events in quadrant A5,822,446613,915
Events in quadrant B4,356,707686,583
Events in quadrant C3,053,406696,461
Events in quadrant D3,495,705657,795

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215843
B0172632
C0133902
D0146582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6427105416.399564%
B64273705.756963%
C6427731.135833%
D64271332.069395%

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 7532 6427 692 692 9.19% 10.77%
B 7532 6427 163 163 2.16% 2.54%
C 7532 6427 0 0 0.00% 0.00%
D 7532 6427 43 43 0.57% 0.67%

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 8 5 2957971 19975.15 736 722 148.0
A 8 6 9291 57.88 736 722 148.0
A 1 162 9277 57.79 736 722 148.0
B 4 239 1218240 8209.96 784 766 148.3
B 0 214 28731 188.58 784 766 148.3
B 0 219 25417 166.23 784 766 148.3
C 13 61 5815 28.15 780 784 178.7
C 14 234 3409 14.69 780 784 178.7
C 8 222 2932 12.02 780 784 178.7
D 1 52 207055 1122.4 775 753 183.8
D 9 85 148633 804.55 775 753 183.8
D 2 14 40157 214.38 775 753 183.8

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