ASTROSAT CZTI

Data Quality Report

Orbit 48508

Creation date: 2024-09-16T16:41:13.437772
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_9000006432_48508cztM0_level2.fits modeM0/AS1A13_037T01_9000006432_48508cztM0_level2_quad_clean.evt
Size (bytes)618,719,040129,850,560
Size590.1 MB 123.8 MB
Events in quadrant A8,698,825834,115
Events in quadrant B4,035,531890,275
Events in quadrant C3,855,665878,663
Events in quadrant D5,641,895728,803

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326252
B0184422
C0181762
D0232952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86407799.016204%
B86415676.561741%
C86413474.015739%
D8641102711.885198%

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 9530 8644 1 1 0.01% 0.01%
B 9531 8644 4 4 0.04% 0.05%
C 9531 8645 0 0 0.00% 0.00%
D 9531 8644 603 603 6.33% 6.98%

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 4801747 23406.52 973 950 205.1
A 12 189 130155 629.95 973 950 205.1
A 13 254 16592 76.26 973 950 205.1
B 8 234 77428 384.67 985 951 198.8
B 12 16 41496 203.94 985 951 198.8
B 12 111 26348 127.74 985 951 198.8
C 1 3 11199 43.96 984 984 232.4
C 13 61 6323 22.97 984 984 232.4
C 3 233 5625 19.97 984 984 232.4
D 2 165 1787852 7538.1 937 901 237.1
D 7 38 122472 512.84 937 901 237.1
D 12 233 67847 282.41 937 901 237.1

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