ASTROSAT CZTI

Data Quality Report

Orbit 50305

Creation date: 2025-01-16T13:15:02.797953
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_003T01_9000006442_50305cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50305cztM0_level2_quad_clean.evt
Size (bytes)1,087,176,96062,614,080
Size1.0 GB 59.7 MB
Events in quadrant A4,764,865616,131
Events in quadrant B9,209,873447,732
Events in quadrant C14,327,51986,101
Events in quadrant D11,450,889301,694

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185331
B0316991
C0469201
D0384311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63593064.812077%
B6359249739.267180%
C6359559587.985532%
D6359318250.039314%

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 7449 6360 135 135 1.81% 2.12%
B 7449 6360 1875 1875 25.17% 29.48%
C 7449 6359 4569 4569 61.34% 71.85%
D 7449 6359 2990 2990 40.14% 47.02%

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 3 14 475544 2775.69 694 678 171.1
A 3 231 334551 1951.56 694 678 171.1
A 3 114 176342 1026.79 694 678 171.1
B 4 206 5511032 44804.07 578 559 123.0
B 5 32 1039732 8449.22 578 559 123.0
B 6 203 74180 598.59 578 559 123.0
C 15 197 5675477 85886.49 226 223 66.1
C 4 111 5284192 79964.97 226 223 66.1
C 6 143 663467 10037.21 226 223 66.1
D 7 61 5166617 37222.91 490 473 138.8
D 12 6 1755309 12643.88 490 473 138.8
D 15 108 565856 4073.68 490 473 138.8

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