ASTROSAT CZTI

Data Quality Report

Orbit 43035

Creation date: 2024-06-27T22:47:11.301200
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_148T01_9000005838_43035cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_43035cztM0_level2_quad_clean.evt
Size (bytes)424,846,080106,156,800
Size405.2 MB 101.2 MB
Events in quadrant A3,332,272761,645
Events in quadrant B4,326,899735,620
Events in quadrant C2,985,703731,976
Events in quadrant D4,657,273603,179

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131543
B0163872
C0118322
D0174592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5460320.586081%
B54603756.868132%
C5460300.549451%
D546060211.025641%

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 7162 5461 20 20 0.28% 0.37%
B 7162 5461 290 290 4.05% 5.31%
C 7162 5461 38 38 0.53% 0.70%
D 7162 5460 402 402 5.61% 7.36%

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 587544 4070.84 664 656 144.2
A 15 237 122027 841.87 664 656 144.2
A 12 189 60704 416.51 664 656 144.2
B 5 255 862919 6484.79 645 631 133.0
B 0 186 384181 2884.47 645 631 133.0
B 0 229 262916 1972.5 645 631 133.0
C 15 214 243948 1538.52 642 648 158.1
C 0 207 230898 1455.99 642 648 158.1
C 14 254 6755 38.61 642 648 158.1
D 1 52 1689547 10703.16 607 588 157.8
D 13 249 332640 2104.26 607 588 157.8
D 1 47 170308 1075.54 607 588 157.8

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