ASTROSAT CZTI

Data Quality Report

Orbit 51860

Creation date: 2025-04-30T12:09:13.299294
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_011T05_9000006466_51860cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51860cztM0_level2_quad_clean.evt
Size (bytes)626,503,68081,103,680
Size597.5 MB 77.3 MB
Events in quadrant A4,880,306563,483
Events in quadrant B3,303,198631,605
Events in quadrant C3,691,302540,749
Events in quadrant D10,834,534286,312

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187811
B0141981
C0157191
D0364821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62101873.011272%
B6210751.207729%
C62112974.781839%
D6211313750.507165%

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 7132 6212 103 103 1.44% 1.66%
B 7132 6213 25 25 0.35% 0.40%
C 7133 6213 178 178 2.50% 2.86%
D 7133 6213 2970 2970 41.64% 47.80%

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 12 3 1336764 8584.91 627 613 155.6
A 12 194 159842 1023.06 627 613 155.6
A 4 3 151832 971.6 627 613 155.6
B 5 185 120360 895.33 634 612 133.7
B 0 171 91831 682.03 634 612 133.7
B 4 81 86389 641.34 634 612 133.7
C 15 158 427591 2506.33 608 603 170.4
C 13 3 212924 1246.28 608 603 170.4
C 0 193 204097 1194.47 608 603 170.4
D 11 129 6870240 55011.14 441 425 124.9
D 8 176 1632563 13069.61 441 425 124.9
D 3 12 337115 2696.1 441 425 124.9

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