ASTROSAT CZTI

Data Quality Report

Orbit 49821

Creation date: 2024-12-14T04:42:25.144043
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/AS1A13_037T01_9000006440_49821cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49821cztM0_level2_quad_clean.evt
Size (bytes)985,227,84057,689,280
Size939.6 MB 55.0 MB
Events in quadrant A7,428,709510,271
Events in quadrant B3,608,266666,458
Events in quadrant C11,778,25294,310
Events in quadrant D13,141,57815,064

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266471
B0152661
C0395301
D0435811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6601123618.724436%
B6601971.469474%
C6601572486.714134%
D6602647598.076341%

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 7581 6602 1149 1149 15.16% 17.40%
B 7581 6602 67 67 0.88% 1.01%
C 7581 6602 2789 2789 36.79% 42.24%
D 7582 6603 3340 3340 44.05% 50.58%

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 0 175 2288471 14062.18 639 622 162.7
A 3 1 460077 2824.02 639 622 162.7
A 4 4 454239 2788.14 639 622 162.7
B 5 49 207153 1399.5 698 676 147.5
B 0 229 158409 1069.11 698 676 147.5
B 4 206 118402 797.94 698 676 147.5
C 15 147 3620919 38826.65 254 248 93.3
C 1 44 1175251 12600.27 254 248 93.3
C 15 197 1164367 12483.55 254 248 93.3
D 7 61 6121222 73254.08 247 236 83.6
D 14 66 1431564 17129.69 247 236 83.6
D 15 184 1276166 15269.94 247 236 83.6

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