ASTROSAT CZTI

Data Quality Report

Orbit 20190713_A05_115T01_9000003030_level2

Creation date: 2025-12-02T01:32:32.981371
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/AS1A05_115T01_9000003030cztM0_level2.fits modeM0/AS1A05_115T01_9000003030cztM0_level2_quad_clean.evt
Size (bytes)956,090,880694,779,840
Size911.8 MB 662.6 MB
Events in quadrant A6,004,1703,926,740
Events in quadrant B5,754,7683,897,567
Events in quadrant C5,832,6363,684,960
Events in quadrant D4,598,0782,770,332

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020040
B020040
C020040
D020040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02089110
B02207220
C02077660
D03814210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9860913761.395410%
B9861318151.840528%
C9861015601.581990%
D986071700517.245226%

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 117229 98594 0 0 0.00% 0.00%
B 117228 98598 0 0 0.00% 0.00%
C 117228 98597 0 0 0.00% 0.00%
D 117229 98260 0 0 0.00% 0.00%

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 0 29 5821 11.44 1561 1471 380.1
A 7 110 4824 8.82 1561 1471 380.1
A 0 30 4585 8.19 1561 1471 380.1
B 14 254 3743 7.68 1527 1457 297.7
B 5 128 3693 7.51 1527 1457 297.7
B 3 17 3689 7.5 1527 1457 297.7
C 12 241 4036 6.56 1542 1441 395.5
C 12 250 3932 6.3 1542 1441 395.5
C 9 209 3929 6.29 1542 1441 395.5
D 10 189 3291 5.94 1317 1199 352.3
D 3 14 3250 5.82 1317 1199 352.3
D 4 160 3197 5.67 1317 1199 352.3

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