ASTROSAT CZTI

Data Quality Report

Orbit 56290

Creation date: 2026-02-22T17:21:38.839326
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_049T01_9000006552_56290cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56290cztM0_level2_quad_clean.evt
Size (bytes)836,493,12079,856,640
Size797.7 MB 76.2 MB
Events in quadrant A12,583,357308,160
Events in quadrant B4,114,878664,219
Events in quadrant C8,710,576415,839
Events in quadrant D5,042,132568,232

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0419762
B0166852
C0304752
D0195283

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6624387558.499396%
B66244867.336957%
C6624250637.832126%
D66233925.918768%

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 7654 6624 3430 3430 44.81% 51.78%
B 7654 6624 223 223 2.91% 3.37%
C 7654 6624 2020 2020 26.39% 30.50%
D 7653 6623 259 259 3.38% 3.91%

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 32 5253474 40071.03 529 516 131.1
A 7 64 2237632 17065.34 529 516 131.1
A 14 235 767664 5852.02 529 516 131.1
B 5 172 594112 3950.62 706 680 150.2
B 5 185 257077 1706.9 706 680 150.2
B 0 63 115385 763.62 706 680 150.2
C 12 254 4912515 31250.51 578 572 157.2
C 13 3 689860 4385.35 578 572 157.2
C 5 250 355837 2260.25 578 572 157.2
D 12 31 811433 4025.46 711 678 201.4
D 2 249 542094 2688.17 711 678 201.4
D 8 129 238273 1179.68 711 678 201.4

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