ASTROSAT CZTI

Data Quality Report

Orbit 58699

Creation date: 2026-08-04T18:18:34.934247
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_004T06_9000006594_58699cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58699cztM0_level2_quad_clean.evt
Size (bytes)695,064,96091,051,200
Size662.9 MB 86.8 MB
Events in quadrant A3,348,549667,310
Events in quadrant B7,768,103586,501
Events in quadrant C3,870,993633,185
Events in quadrant D10,218,601399,963

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143571
B0276801
C0161891
D0349664

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67401372.032641%
B6741158623.527667%
C67411882.788904%
D6740264239.198813%

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 7740 6740 44 44 0.57% 0.65%
B 7741 6741 1033 1033 13.34% 15.32%
C 7741 6741 80 80 1.03% 1.19%
D 7740 6740 2024 2024 26.15% 30.03%

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 17 129360 678.56 767 748 189.5
A 7 64 107278 562.06 767 748 189.5
A 3 14 77358 404.2 767 748 189.5
B 5 172 4386975 29715.29 686 660 147.6
B 2 249 168031 1133.86 686 660 147.6
B 12 0 141157 951.8 686 660 147.6
C 12 252 295758 1475.28 734 728 200.0
C 6 223 215947 1076.19 734 728 200.0
C 14 254 160879 800.83 734 728 200.0
D 11 129 6616229 38360.9 603 577 172.5
D 2 62 507512 2939.47 603 577 172.5
D 8 240 364795 2111.92 603 577 172.5

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