ASTROSAT CZTI

Data Quality Report

Orbit 54964

Creation date: 2025-11-25T13:39:03.300657
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_014T01_9000006528_54964cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54964cztM0_level2_quad_clean.evt
Size (bytes)4,655,928,960501,857,280
Size4.3 GB 478.6 MB
Events in quadrant A23,583,9683,830,155
Events in quadrant B19,441,9514,249,943
Events in quadrant C22,053,3643,761,813
Events in quadrant D103,996,850448,256

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01015075
B0901775
C0966175
D03380887

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08520
B08520
C08520
D08520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4229516573.917721%
B422974591.085183%
C422976211.468189%
D422963766489.048610%

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 50328 42301 1360 1360 2.70% 3.22%
B 50329 42302 155 155 0.31% 0.37%
C 50329 42302 461 461 0.92% 1.09%
D 50329 42301 36126 36126 71.78% 85.40%

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 4133425 3806.32 4432 4324 1084.8
A 0 8 1061983 974.98 4432 4324 1084.8
A 4 3 323117 293.87 4432 4324 1084.8
B 5 185 670740 699.15 4467 4292 953.2
B 5 172 285703 295.22 4467 4292 953.2
B 7 252 196215 201.34 4467 4292 953.2
C 4 5 1767745 1453.87 4396 4360 1212.9
C 12 252 646721 529.61 4396 4360 1212.9
C 14 254 624428 511.23 4396 4360 1212.9
D 15 94 93318474 192231.2 1694 1618 485.4
D 2 249 1026763 2111.78 1694 1618 485.4
D 3 12 657756 1351.63 1694 1618 485.4

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