ASTROSAT CZTI

Data Quality Report

Orbit 51962

Creation date: 2025-05-07T09:15:26.411535
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_51962cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51962cztM0_level2_quad_clean.evt
Size (bytes)698,209,92054,812,160
Size665.9 MB 52.3 MB
Events in quadrant A6,466,254323,026
Events in quadrant B2,974,171469,060
Events in quadrant C8,480,168250,022
Events in quadrant D7,553,023279,802

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263483775
B0143102104
C0330994597
D0284772712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01412
B086
C01715
D01210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012226
B012832
C012529
D011721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4804144330.037469%
B48071362.829207%
C4801236149.177255%
D4810166234.553015%

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 7903 4812 1154 1154 14.60% 23.98%
B 7903 4819 101 101 1.28% 2.10%
C 7903 4805 1852 1852 23.43% 38.54%
D 7901 4816 1705 1705 21.58% 35.40%

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 4 159 2545535 25208.21 394 385 101.0
A 7 64 834042 8256.88 394 385 101.0
A 4 95 411011 4067.01 394 385 101.0
B 5 185 438650 4346.9 468 452 100.8
B 10 44 101113 998.55 468 452 100.8
B 4 81 95749 945.34 468 452 100.8
C 15 224 5374124 54127.54 347 343 99.3
C 13 3 424334 4270.66 347 343 99.3
C 15 192 382129 3845.55 347 343 99.3
D 6 42 4787140 42711.81 389 370 112.1
D 12 17 637848 5688.14 389 370 112.1
D 2 120 92176 819.17 389 370 112.1

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