ASTROSAT CZTI

Data Quality Report

Orbit 33278

Creation date: 2024-06-27T20:46:58.872812
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/AS1T04_072T01_9000004780_33278cztM0_level2.evt modeM0/AS1T04_072T01_9000004780_33278cztM0_level2_quad_clean.evt
Size (bytes)490,826,88078,635,520
Size468.1 MB 75.0 MB
Events in quadrant A2,897,831532,569
Events in quadrant B3,812,536509,174
Events in quadrant C3,342,727506,565
Events in quadrant D4,470,928480,145

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114092
B0147431
C0130511
D0169101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5032751.490461%
B50323186.319555%
C50321052.086645%
D50321442.861685%

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 9068 5034 58 58 0.64% 1.15%
B 9068 5034 254 254 2.80% 5.05%
C 9068 5034 85 85 0.94% 1.69%
D 9068 5034 130 130 1.43% 2.58%

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 15 169 208228 1527.54 692 682 135.9
A 13 6 14419 101.1 692 682 135.9
A 13 254 10035 68.84 692 682 135.9
B 5 172 889536 7180.89 669 655 123.8
B 0 219 173947 1399.95 669 655 123.8
B 5 200 31979 253.05 669 655 123.8
C 15 214 218247 1466.61 649 654 148.4
C 1 23 175970 1181.66 649 654 148.4
C 15 208 162236 1089.09 649 654 148.4
D 8 195 1063621 6111.45 652 641 173.9
D 12 218 298549 1712.78 652 641 173.9
D 12 6 179654 1029.21 652 641 173.9

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