ASTROSAT CZTI

Data Quality Report

Orbit 59016

Creation date: 2026-08-25T02:45:40.049320
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_004T02_9000006600_59016cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59016cztM0_level2_quad_clean.evt
Size (bytes)1,819,477,440147,663,360
Size1.7 GB 140.8 MB
Events in quadrant A7,236,7321,314,736
Events in quadrant B20,396,572769,206
Events in quadrant C29,450,091261,664
Events in quadrant D9,206,7661,175,849

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311873
B0698743
C0965103
D0367893

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A137311931.405579%
B13731681349.617653%
C137311112781.035613%
D137313572.599956%

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 15666 13732 80 80 0.51% 0.58%
B 15666 13731 5133 5133 32.77% 37.38%
C 15665 13730 11068 11068 70.65% 80.61%
D 15666 13732 303 303 1.93% 2.21%

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 10 251 627390 1652.02 1533 1495 378.9
A 3 14 361101 949.16 1533 1495 378.9
A 15 233 152869 399.55 1533 1495 378.9
B 2 249 15268874 63171.77 1142 1100 241.7
B 4 236 194147 798.75 1142 1100 241.7
B 5 185 139512 572.69 1142 1100 241.7
C 15 219 26687365 162140.32 602 597 164.6
C 6 13 118127 714.07 602 597 164.6
C 12 252 115861 700.31 602 597 164.6
D 12 110 1385320 3236.12 1483 1413 427.6
D 11 129 830672 1939.13 1483 1413 427.6
D 2 249 239213 556.07 1483 1413 427.6

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