ASTROSAT CZTI

Data Quality Report

Orbit 46735

Creation date: 2024-06-27T23:27:00.327427
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/AS1T05_205T01_9000006260_46735cztM0_level2.fits modeM0/AS1T05_205T01_9000006260_46735cztM0_level2_quad_clean.evt
Size (bytes)516,574,080106,948,800
Size492.6 MB 102.0 MB
Events in quadrant A6,848,147690,492
Events in quadrant B4,935,446726,489
Events in quadrant C3,342,502720,092
Events in quadrant D3,503,350658,234

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243521
B0189651
C0144241
D0149581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63514767.494883%
B63515168.124705%
C63511151.810738%
D63511211.905212%

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 7571 6351 311 311 4.11% 4.90%
B 7571 6352 358 358 4.73% 5.64%
C 7571 6352 88 88 1.16% 1.39%
D 7571 6352 91 91 1.20% 1.43%

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 3267664 22280.57 707 692 146.6
A 15 235 545096 3712.81 707 692 146.6
A 13 248 195294 1327.17 707 692 146.6
B 12 16 1853459 13347.2 705 684 138.8
B 3 112 157257 1127.94 705 684 138.8
B 0 190 55254 393.12 705 684 138.8
C 12 2 413389 2467.77 710 714 167.2
C 3 233 95276 565.47 710 714 167.2
C 14 254 61306 362.34 710 714 167.2
D 1 52 349011 1966.93 706 686 177.1
D 13 249 248063 1396.89 706 686 177.1
D 15 217 52981 295.3 706 686 177.1

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