ASTROSAT CZTI

Data Quality Report

Orbit 58731

Creation date: 2026-08-05T21:24:16.100339
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_004T06_9000006594_58731cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58731cztM0_level2_quad_clean.evt
Size (bytes)450,483,84091,624,320
Size429.6 MB 87.4 MB
Events in quadrant A3,101,604622,747
Events in quadrant B3,717,925654,283
Events in quadrant C3,079,749595,880
Events in quadrant D6,302,662476,988

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135401
B0151741
C0134431
D0229021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60861792.941176%
B60862213.631285%
C60871161.905701%
D6087119319.599146%

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 7216 6086 54 54 0.75% 0.89%
B 7216 6086 84 84 1.16% 1.38%
C 7217 6087 49 49 0.68% 0.80%
D 7217 6087 1096 1096 15.19% 18.01%

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 12 114 349317 2033.33 692 673 171.5
A 7 64 16946 94.91 692 673 171.5
A 3 254 16142 90.22 692 673 171.5
B 8 234 557482 3841.8 674 651 144.9
B 4 201 119532 820.21 674 651 144.9
B 6 255 91668 627.96 674 651 144.9
C 13 3 177326 950.95 675 668 185.8
C 12 252 59728 317.92 675 668 185.8
C 12 249 47665 252.99 675 668 185.8
D 5 38 1699366 9386.23 639 611 181.0
D 11 129 1563387 8634.9 639 611 181.0
D 2 120 175141 964.34 639 611 181.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct