ASTROSAT CZTI

Data Quality Report

Orbit 18296

Creation date: 2024-06-27T17:48:00.833529
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/AS1A06_006T01_9000002720_18296cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18296cztM0_level2_quad_clean.evt
Size (bytes)516,792,96073,272,960
Size492.9 MB 69.9 MB
Events in quadrant A3,349,640454,828
Events in quadrant B3,392,709459,782
Events in quadrant C3,381,288448,882
Events in quadrant D5,107,509422,698

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135341
B0136881
C0137541
D0191731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6199821.322794%
B6200831.338710%
C62001422.290323%
D62005689.161290%

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 7549 6200 6 6 0.08% 0.10%
B 7550 6201 0 0 0.00% 0.00%
C 7550 6201 3 3 0.04% 0.05%
D 7550 6201 429 429 5.68% 6.92%

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 15 174 34687 198.71 856 841 170.3
A 9 143 25242 143.26 856 841 170.3
A 0 226 7622 39.81 856 841 170.3
B 0 244 21716 129.98 857 837 160.6
B 12 111 17432 103.31 857 837 160.6
B 11 111 14949 87.85 857 837 160.6
C 14 238 129325 677.39 826 834 189.7
C 0 207 29413 150.67 826 834 189.7
C 13 61 5930 26.87 826 834 189.7
D 7 238 870496 4447.01 811 789 195.6
D 1 52 824597 4212.32 811 789 195.6
D 13 168 203550 1036.76 811 789 195.6

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