ASTROSAT CZTI

Data Quality Report

Orbit 56378

Creation date: 2026-02-28T14:50:29.732441
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_56378cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56378cztM0_level2_quad_clean.evt
Size (bytes)636,324,48090,446,400
Size606.8 MB 86.3 MB
Events in quadrant A6,776,710564,725
Events in quadrant B4,835,781645,680
Events in quadrant C6,759,609500,743
Events in quadrant D4,656,684554,799

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247881
B0189081
C0250021
D0184452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6778102515.122455%
B677969110.193244%
C6779148321.876383%
D67783695.444084%

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 7623 6779 873 873 11.45% 12.88%
B 7624 6780 466 466 6.11% 6.87%
C 7624 6780 1262 1262 16.55% 18.61%
D 7623 6779 193 193 2.53% 2.85%

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 2608463 14859.37 705 688 175.5
A 12 3 550540 3133.11 705 688 175.5
A 0 8 185798 1054.78 705 688 175.5
B 0 213 1113145 7284.52 720 692 152.7
B 1 223 128064 834.05 720 692 152.7
B 4 21 127990 833.56 720 692 152.7
C 15 230 3153851 18583.39 622 617 169.7
C 12 252 365514 2150.5 622 617 169.7
C 12 254 306425 1802.26 622 617 169.7
D 8 129 557855 2771.34 713 681 201.0
D 5 113 361509 1794.73 713 681 201.0
D 8 240 305787 1517.58 713 681 201.0

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