ASTROSAT CZTI

Data Quality Report

Orbit 25864

Creation date: 2024-06-27T19:22:13.233418
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/AS1A07_068T01_9000003756_25864cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25864cztM0_level2_quad_clean.evt
Size (bytes)570,456,00099,187,200
Size544.0 MB 94.6 MB
Events in quadrant A6,350,545642,490
Events in quadrant B3,251,404677,854
Events in quadrant C2,910,134642,627
Events in quadrant D4,373,612637,169

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229500
B0133380
C0123620
D0169630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A576979313.745883%
B57691282.218755%
C5769831.438724%
D57694167.210955%

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 6939 5770 503 503 7.25% 8.72%
B 6939 5770 60 60 0.86% 1.04%
C 6939 5770 0 0 0.00% 0.00%
D 6939 5770 338 338 4.87% 5.86%

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 0 13 3543316 24403.68 728 716 145.2
A 13 254 8838 55.95 728 716 145.2
A 0 226 6333 38.69 728 716 145.2
B 10 245 246724 1756.9 736 719 140.0
B 10 247 58160 410.23 736 719 140.0
B 0 219 37740 264.39 736 719 140.0
C 14 238 115025 692.31 708 713 165.1
C 3 233 27314 161.1 708 713 165.1
C 13 61 4957 25.7 708 713 165.1
D 1 52 1528889 8991.74 721 705 170.0
D 12 233 47572 275.76 721 705 170.0
D 7 80 30970 178.08 721 705 170.0

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