ASTROSAT CZTI

Data Quality Report

Orbit 54240

Creation date: 2025-10-07T17:19:35.993963
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_004T08_9000006514_54240cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54240cztM0_level2_quad_clean.evt
Size (bytes)719,398,08078,828,480
Size686.1 MB 75.2 MB
Events in quadrant A5,113,580575,361
Events in quadrant B4,432,388678,631
Events in quadrant C4,258,902550,921
Events in quadrant D12,335,958142,814

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194671
B0174271
C0172631
D0409671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A629175712.033063%
B62921893.003814%
C62925308.423395%
D6292475775.603942%

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 7421 6292 491 491 6.62% 7.80%
B 7422 6293 86 86 1.16% 1.37%
C 7422 6293 386 386 5.20% 6.13%
D 7421 6292 3616 3616 48.73% 57.47%

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 7 29 1977411 12286.98 650 634 160.9
A 5 243 325736 2020.72 650 634 160.9
A 15 174 106644 658.92 650 634 160.9
B 5 172 975902 6845.17 669 647 142.5
B 5 185 229239 1604.45 669 647 142.5
B 4 171 96983 676.17 669 647 142.5
C 1 241 506565 2940.48 626 618 172.1
C 15 198 476288 2764.52 626 618 172.1
C 15 215 428691 2487.89 626 618 172.1
D 8 176 9734109 122515.59 271 258 79.4
D 2 172 912782 11485.53 271 258 79.4
D 3 12 346057 4352.42 271 258 79.4

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