ASTROSAT CZTI

Data Quality Report

Orbit 09799

Creation date: 2024-06-27T15:50:47.831294
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/AS1G05_218T01_9000001394_09799cztM0_level2.evt modeM0/AS1G05_218T01_9000001394_09799cztM0_level2_quad_clean.evt
Size (bytes)877,098,240154,762,560
Size836.5 MB 147.6 MB
Events in quadrant A5,678,395982,885
Events in quadrant B5,736,9251,012,146
Events in quadrant C5,505,404968,071
Events in quadrant D8,853,160916,826

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242404
B0243503
C0241125
D0342775

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11673870.745310%
B116731130.968046%
C11672700.599726%
D116723583.067169%

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 14288 11675 0 0 0.00% 0.00%
B 14288 11675 1 1 0.01% 0.01%
C 14288 11675 0 0 0.00% 0.00%
D 14288 11675 232 232 1.62% 1.99%

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 0 226 13430 40.57 1471 1441 295.5
A 12 194 11696 34.7 1471 1441 295.5
A 1 162 10070 29.2 1471 1441 295.5
B 12 111 31166 106.34 1471 1437 279.6
B 11 111 25778 87.07 1471 1437 279.6
B 14 111 20412 67.87 1471 1437 279.6
C 13 61 10416 27.63 1409 1417 325.6
C 5 128 7805 19.62 1409 1417 325.6
C 14 234 5208 11.64 1409 1417 325.6
D 1 52 3184083 8850.62 1386 1358 359.6
D 2 152 173915 479.85 1386 1358 359.6
D 9 85 76087 207.81 1386 1358 359.6

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