ASTROSAT CZTI

Data Quality Report

Orbit 46702

Creation date: 2024-06-27T23:26:38.470510
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_9000006256_46702cztM0_level2.fits modeM0/AS1A13_037T01_9000006256_46702cztM0_level2_quad_clean.evt
Size (bytes)1,859,941,440354,974,400
Size1.7 GB 338.5 MB
Events in quadrant A24,015,0182,331,171
Events in quadrant B12,524,5422,453,378
Events in quadrant C12,456,0812,308,247
Events in quadrant D18,062,9612,057,061

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0877877
B0533531
C0538911
D0702331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04660
B04660
C04660
D04660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2320514646.308985%
B232066612.848401%
C232056762.913165%
D2320618097.795398%

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 39116 23206 864 864 2.21% 3.72%
B 39117 23207 170 170 0.43% 0.73%
C 39116 23206 528 528 1.35% 2.28%
D 39116 23206 1523 1523 3.89% 6.56%

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 10 83 11188088 21495.49 2487 2432 520.4
A 13 248 2524655 4846.96 2487 2432 520.4
A 15 254 243747 463.74 2487 2432 520.4
B 15 36 1103866 2250.95 2514 2437 489.3
B 4 171 368930 748.99 2514 2437 489.3
B 0 198 246650 499.09 2514 2437 489.3
C 12 2 1853672 3231.51 2446 2460 572.9
C 8 131 654665 1138.5 2446 2460 572.9
C 14 254 191293 329.63 2446 2460 572.9
D 1 52 4176321 6943.67 2403 2325 601.1
D 13 249 1269639 2108.25 2403 2325 601.1
D 2 249 581887 964.13 2403 2325 601.1

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