ASTROSAT CZTI

Data Quality Report

Orbit 37591

Creation date: 2024-06-27T21:41:55.465416
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/AS1T05_053T01_9000005338_37591cztM0_level2.evt modeM0/AS1T05_053T01_9000005338_37591cztM0_level2_quad_clean.evt
Size (bytes)411,589,44067,907,520
Size392.5 MB 64.8 MB
Events in quadrant A2,919,506432,594
Events in quadrant B3,414,355426,772
Events in quadrant C2,729,618424,953
Events in quadrant D3,047,944407,171

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119073
B0134922
C0112552
D0125722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5204360.691776%
B52042134.093005%
C5204510.980015%
D5204601.152959%

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 7089 5205 31 31 0.44% 0.60%
B 7089 5205 170 170 2.40% 3.27%
C 7089 5205 48 48 0.68% 0.92%
D 7089 5205 75 75 1.06% 1.44%

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 10 83 335691 2755.58 607 596 121.6
A 9 143 126048 1031.63 607 596 121.6
A 15 222 45109 366.04 607 596 121.6
B 5 172 333485 2904.84 599 585 114.6
B 5 255 241094 2098.65 599 585 114.6
B 0 213 98169 851.5 599 585 114.6
C 15 214 224424 1653.16 580 585 135.4
C 0 10 156784 1153.61 580 585 135.4
C 14 254 67963 497.62 580 585 135.4
D 2 249 263496 1870.57 579 563 140.6
D 12 233 160746 1139.58 579 563 140.6
D 2 153 130884 927.13 579 563 140.6

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