ASTROSAT CZTI

Data Quality Report

Orbit 33281

Creation date: 2024-06-27T20:47:01.128125
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_33281cztM0_level2.evt modeM0/AS1T04_072T01_9000004780_33281cztM0_level2_quad_clean.evt
Size (bytes)596,255,04089,568,000
Size568.6 MB 85.4 MB
Events in quadrant A4,600,542586,711
Events in quadrant B3,947,934604,100
Events in quadrant C4,286,753573,646
Events in quadrant D4,863,959575,828

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170673
B0151442
C0160212
D0182572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A530760511.400038%
B53073175.973243%
C53074137.782174%
D53081552.920121%

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 7280 5308 364 364 5.00% 6.86%
B 7280 5307 216 216 2.97% 4.07%
C 7280 5308 379 379 5.21% 7.14%
D 7281 5309 120 120 1.65% 2.26%

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 1930036 15621.85 621 610 123.5
A 12 16 224405 1811.99 621 610 123.5
A 12 194 37022 294.81 621 610 123.5
B 5 172 945096 7985.59 624 610 118.3
B 0 219 282895 2386.71 624 610 118.3
B 0 190 65425 548.01 624 610 118.3
C 1 23 1133473 8203.74 602 608 138.1
C 10 49 273320 1974.87 602 608 138.1
C 15 214 224498 1621.32 602 608 138.1
D 8 195 1859438 11354.49 618 604 163.7
D 12 218 200068 1218.4 618 604 163.7
D 12 6 52596 317.59 618 604 163.7

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