ASTROSAT CZTI

Data Quality Report

Orbit 59149

Creation date: 2026-09-03T00:13:56.299974
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_59149cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59149cztM0_level2_quad_clean.evt
Size (bytes)729,944,64088,597,440
Size696.1 MB 84.5 MB
Events in quadrant A4,250,862649,325
Events in quadrant B3,504,247704,773
Events in quadrant C4,390,765636,133
Events in quadrant D14,353,737224,594

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173182
B0151212
C0175572
D0472482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67082473.682171%
B67072463.667810%
C67082964.412642%
D6708444666.279070%

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 7683 6708 137 137 1.78% 2.04%
B 7683 6708 148 148 1.93% 2.21%
C 7683 6708 193 193 2.51% 2.88%
D 7682 6707 4393 4393 57.19% 65.50%

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 15 233 795055 4239.63 761 743 187.4
A 3 14 306838 1633.78 761 743 187.4
A 10 251 133624 709.25 761 743 187.4
B 0 186 369798 2274.76 749 718 162.3
B 5 185 54801 333.33 749 718 162.3
B 4 201 52875 321.46 749 718 162.3
C 5 250 770668 3769.29 743 736 204.3
C 12 252 172835 842.53 743 736 204.3
C 14 254 169505 826.23 743 736 204.3
D 12 1 8534102 74562.46 398 380 114.5
D 12 110 3588440 31350.28 398 380 114.5
D 8 129 381307 3328.31 398 380 114.5

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