ASTROSAT CZTI

Data Quality Report

Orbit 53189

Creation date: 2025-07-29T00:32:22.853122
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_011T06_9000006490_53189cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53189cztM0_level2_quad_clean.evt
Size (bytes)784,742,40073,955,520
Size748.4 MB 70.5 MB
Events in quadrant A3,907,175578,824
Events in quadrant B3,994,534612,723
Events in quadrant C5,013,800533,621
Events in quadrant D15,651,78780,634

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160121
B0163071
C0192021
D0507569

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62071492.400516%
B62071602.577735%
C62083295.299613%
D6207546187.981311%

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 7027 6208 114 114 1.62% 1.84%
B 7027 6207 95 95 1.35% 1.53%
C 7028 6209 282 282 4.01% 4.54%
D 7026 6206 5643 5643 80.32% 90.93%

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 403683 2515.01 638 624 160.3
A 0 8 260185 1619.61 638 624 160.3
A 3 62 199433 1240.53 638 624 160.3
B 10 254 927361 6900.56 631 609 134.3
B 2 249 233991 1737.75 631 609 134.3
B 7 128 66390 489.8 631 609 134.3
C 15 224 1363175 7999.95 616 610 170.3
C 10 22 354443 2077.44 616 610 170.3
C 4 5 229327 1342.85 616 610 170.3
D 15 125 13752407 148293.32 313 297 92.7
D 0 18 245008 2638.8 313 297 92.7
D 4 7 61058 655.2 313 297 92.7

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