ASTROSAT CZTI

Data Quality Report

Orbit 52669

Creation date: 2025-06-23T23:07:04.640228
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_011T07_9000006480_52669cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52669cztM0_level2_quad_clean.evt
Size (bytes)731,540,16080,101,440
Size697.7 MB 76.4 MB
Events in quadrant A5,629,414530,299
Events in quadrant B4,953,279598,714
Events in quadrant C8,688,962442,706
Events in quadrant D7,343,223432,499

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208271
B0189121
C0299861
D0260291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A601965910.948663%
B60182984.951811%
C6018151325.141243%
D6018125820.903955%

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 7060 6019 518 518 7.34% 8.61%
B 7059 6018 180 180 2.55% 2.99%
C 7059 6018 1594 1594 22.58% 26.49%
D 7058 6017 1297 1297 18.38% 21.56%

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 1468980 9701.38 605 593 151.4
A 14 254 1217799 8041.87 605 593 151.4
A 4 249 91299 599.28 605 593 151.4
B 10 128 1571866 11998.69 618 597 131.0
B 5 185 247126 1882.57 618 597 131.0
B 2 249 135337 1028.92 618 597 131.0
C 15 248 5352118 34621.43 563 559 154.6
C 13 3 709824 4588.53 563 559 154.6
C 15 233 72450 465.09 563 559 154.6
D 8 176 2571396 15870.14 565 539 162.0
D 6 42 1281925 7910.12 565 539 162.0
D 3 12 381626 2352.49 565 539 162.0

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