ASTROSAT CZTI

Data Quality Report

Orbit 56407

Creation date: 2026-03-02T13:26:54.336075
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/AS1A14_083T05_9000006554_56407cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56407cztM0_level2_quad_clean.evt
Size (bytes)762,877,44086,264,640
Size727.5 MB 82.3 MB
Events in quadrant A7,776,021538,955
Events in quadrant B7,021,702566,166
Events in quadrant C4,701,945568,175
Events in quadrant D8,213,126464,482

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277802
B0255002
C0189812
D0290553

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6797142120.906282%
B6797162123.848757%
C679778311.519788%
D6796154522.733961%

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 7692 6798 1187 1187 15.43% 17.46%
B 7692 6798 839 839 10.91% 12.34%
C 7692 6798 358 358 4.65% 5.27%
D 7691 6797 1333 1333 17.33% 19.61%

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 95 2554472 15008.61 694 677 170.2
A 12 3 1320200 7754.81 694 677 170.2
A 0 8 536689 3150.13 694 677 170.2
B 4 206 3746461 26403.42 672 647 141.9
B 5 172 224115 1575.18 672 647 141.9
B 4 171 91606 641.15 672 647 141.9
C 5 250 1142908 5902.09 709 702 193.5
C 5 233 234150 1206.29 709 702 193.5
C 15 198 201820 1039.23 709 702 193.5
D 8 129 4129487 22523.99 650 618 183.3
D 8 160 709680 3868.11 650 618 183.3
D 2 249 534590 2912.95 650 618 183.3

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