ASTROSAT CZTI

Data Quality Report

Orbit 50155

Creation date: 2025-01-05T16:46:27.678059
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/AS1C09_003T01_9000006442_50155cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50155cztM0_level2_quad_clean.evt
Size (bytes)1,061,585,28066,939,840
Size1012.4 MB 63.8 MB
Events in quadrant A8,974,381494,524
Events in quadrant B3,628,618628,886
Events in quadrant C13,486,268191,752
Events in quadrant D12,718,936268,584

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311541
B0151831
C0444255
D0421551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6343134021.125650%
B63431732.727416%
C6342443069.851782%
D6343357256.314047%

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 7248 6343 1109 1109 15.30% 17.48%
B 7248 6343 72 72 0.99% 1.14%
C 7247 6342 4158 4158 57.38% 65.56%
D 7248 6343 3608 3608 49.78% 56.88%

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 9 191 1715669 11198.91 612 597 153.1
A 8 8 1110899 7249.94 612 597 153.1
A 0 98 1012574 6607.91 612 597 153.1
B 3 249 183083 1316.87 651 629 138.6
B 4 206 128092 919.97 651 629 138.6
B 5 185 127633 916.66 651 629 138.6
C 4 111 8162053 74463.65 392 391 109.6
C 15 147 1063859 9702.64 392 391 109.6
C 0 208 485248 4423.64 392 391 109.6
D 15 185 2865587 19285.29 505 487 148.6
D 15 142 1239964 8343.05 505 487 148.6
D 15 184 876510 5896.6 505 487 148.6

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