ASTROSAT CZTI

Data Quality Report

Orbit 33928

Creation date: 2024-06-27T20:54:27.397847
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_088T01_9000004846_33928cztM0_level2.evt modeM0/AS1T04_088T01_9000004846_33928cztM0_level2_quad_clean.evt
Size (bytes)801,112,320129,372,480
Size764.0 MB 123.4 MB
Events in quadrant A4,472,110846,869
Events in quadrant B5,437,510840,208
Events in quadrant C5,031,940824,416
Events in quadrant D8,704,960774,313

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189623
B0217262
C0201352
D0322752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9114150.164582%
B91143083.379416%
C9114810.888743%
D91144054.443713%

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 12819 9116 6 6 0.05% 0.07%
B 12819 9116 208 208 1.62% 2.28%
C 12819 9116 65 65 0.51% 0.71%
D 12819 9116 344 344 2.68% 3.77%

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 166173 764.17 1102 1085 216.0
A 7 16 21814 95.95 1102 1085 216.0
A 10 83 14888 63.89 1102 1085 216.0
B 5 172 861153 4326.86 1069 1044 198.8
B 15 85 135092 674.34 1069 1044 198.8
B 0 190 71690 355.39 1069 1044 198.8
C 15 214 393674 1646.31 1045 1051 238.5
C 0 10 303235 1267.09 1045 1051 238.5
C 3 233 134513 559.62 1045 1051 238.5
D 8 195 1965518 7763.72 1050 1023 253.0
D 1 52 1498708 5918.88 1050 1023 253.0
D 2 250 466967 1841.42 1050 1023 253.0

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