ASTROSAT CZTI

Data Quality Report

Orbit 59132

Creation date: 2026-09-01T22:35:16.988350
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_59132cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59132cztM0_level2_quad_clean.evt
Size (bytes)1,996,122,240222,096,960
Size1.9 GB 211.8 MB
Events in quadrant A9,549,3271,667,945
Events in quadrant B12,478,2031,763,765
Events in quadrant C10,348,1581,659,371
Events in quadrant D40,103,518376,693

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0415203
B0495823
C0430953
D01315753

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182266623.632174%
B1822715178.322818%
C182277093.889834%
D182271433078.619630%

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 19827 18229 245 245 1.24% 1.34%
B 19828 18232 882 882 4.45% 4.84%
C 19828 18232 280 280 1.41% 1.54%
D 19827 18227 12539 12539 63.24% 68.79%

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 13 248 960110 1938.11 2022 1972 494.4
A 10 251 526993 1062.01 2022 1972 494.4
A 3 14 61641 120.7 2022 1972 494.4
B 6 255 2538811 6072.63 1963 1894 417.8
B 4 236 1157312 2765.73 1963 1894 417.8
B 4 201 355335 846.03 1963 1894 417.8
C 15 198 1344289 2459.82 1983 1962 545.7
C 3 233 411890 751.19 1983 1962 545.7
C 12 252 313042 570.06 1983 1962 545.7
D 12 1 33826286 140757.34 835 797 240.3
D 12 110 1663083 6917.24 835 797 240.3
D 2 249 386422 1604.69 835 797 240.3

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