ASTROSAT CZTI

Data Quality Report

Orbit 58979

Creation date: 2026-08-22T14:14:28.489580
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_004T07_9000006598_58979cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58979cztM0_level2_quad_clean.evt
Size (bytes)733,415,04085,757,760
Size699.4 MB 81.8 MB
Events in quadrant A5,626,736621,622
Events in quadrant B10,355,506404,872
Events in quadrant C3,459,737617,215
Events in quadrant D7,196,121493,600

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211362
B0353252
C0150252
D0259132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65835237.944706%
B6583325649.460732%
C65832654.025520%
D6583127719.398451%

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 8838 6585 271 271 3.07% 4.12%
B 8838 6584 2163 2163 24.47% 32.85%
C 8838 6585 138 138 1.56% 2.10%
D 8838 6585 1112 1112 12.58% 16.89%

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 14 238 1634374 8925.08 749 732 183.0
A 3 14 986415 5385.08 749 732 183.0
A 8 249 39098 209.6 749 732 183.0
B 6 255 6327715 51137.53 576 553 123.7
B 3 238 1020182 8240.86 576 553 123.7
B 4 171 298273 2406.24 576 553 123.7
C 12 2 406607 2025.79 733 728 200.4
C 13 3 95603 473.53 733 728 200.4
C 3 233 30937 150.78 733 728 200.4
D 12 110 2152583 11155.74 677 647 192.9
D 12 1 1398969 7248.97 677 647 192.9
D 6 239 615724 3188.59 677 647 192.9

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