ASTROSAT CZTI

Data Quality Report

Orbit 51943

Creation date: 2025-05-06T10:17:42.276845
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/AS1C09_011T06_9000006468_51943cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51943cztM0_level2_quad_clean.evt
Size (bytes)992,321,28071,504,640
Size946.4 MB 68.2 MB
Events in quadrant A8,373,782488,896
Events in quadrant B4,948,009637,404
Events in quadrant C9,498,608411,053
Events in quadrant D13,418,246180,673

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293684
B0191481
C0326931
D0443051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6398151823.726164%
B63994517.047976%
C6399233936.552586%
D6399470273.480231%

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 7448 6399 1452 1452 19.50% 22.69%
B 7449 6400 207 207 2.78% 3.23%
C 7449 6400 2175 2175 29.20% 33.98%
D 7449 6400 4107 4107 55.13% 64.17%

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 15 239 1917633 12555.54 608 593 152.7
A 12 3 1767706 11573.6 608 593 152.7
A 7 64 1344477 8801.69 608 593 152.7
B 12 32 962766 6881.73 659 639 139.8
B 4 171 237270 1692.53 659 639 139.8
B 5 32 165637 1180.17 659 639 139.8
C 15 224 5565388 36297.88 549 546 153.3
C 15 209 585889 3818.03 549 546 153.3
C 15 147 489436 3188.89 549 546 153.3
D 12 17 10004579 102366.82 340 325 97.7
D 6 42 1335969 13666.75 340 325 97.7
D 3 12 248937 2543.88 340 325 97.7

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