ASTROSAT CZTI

Data Quality Report

Orbit 59157

Creation date: 2026-09-03T14:17:40.856763
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/AS1T05_264T01_9000006602_59157cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59157cztM0_level2_quad_clean.evt
Size (bytes)881,605,440105,762,240
Size840.8 MB 100.9 MB
Events in quadrant A3,943,965798,305
Events in quadrant B4,467,793869,471
Events in quadrant C4,307,496790,554
Events in quadrant D19,261,756159,681

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178720
B0191870
C0187960
D0629190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8411370.439900%
B84112032.413506%
C8411580.689573%
D8410676180.392390%

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 8411 8411 5 5 0.06% 0.06%
B 8411 8411 51 51 0.61% 0.61%
C 8411 8411 45 45 0.54% 0.54%
D 8409 8409 6584 6584 78.30% 78.30%

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 130833 546.22 970 943 237.8
A 3 14 29002 118.0 970 943 237.8
A 4 3 17056 67.76 970 943 237.8
B 5 185 268606 1256.83 965 926 213.0
B 4 236 238049 1113.36 965 926 213.0
B 5 236 68132 315.55 965 926 213.0
C 14 254 178097 680.58 949 941 260.3
C 5 250 161550 617.01 949 941 260.3
C 12 252 142647 544.39 949 941 260.3
D 12 1 12740193 125043.78 354 337 101.9
D 12 110 4425251 43431.25 354 337 101.9
D 6 239 478856 4696.74 354 337 101.9

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