ASTROSAT CZTI

Data Quality Report

Orbit 59015

Creation date: 2026-08-25T01:16:15.097133
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_004T02_9000006600_59015cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59015cztM0_level2_quad_clean.evt
Size (bytes)1,365,641,280122,192,640
Size1.3 GB 116.5 MB
Events in quadrant A7,081,5541,003,877
Events in quadrant B9,513,024986,791
Events in quadrant C25,516,33452,725
Events in quadrant D7,611,175913,325

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284941
B0354431
C0827871
D0300092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107174894.562844%
B10717144913.520575%
C107171023195.465149%
D107162722.538261%

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 10962 10718 333 333 3.04% 3.11%
B 10962 10717 1039 1039 9.48% 9.69%
C 10961 10716 10088 10088 92.04% 94.14%
D 10961 10717 282 282 2.57% 2.63%

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 10 251 1755247 6107.15 1154 1122 287.2
A 14 238 463311 1609.15 1154 1122 287.2
A 3 14 240158 832.23 1154 1122 287.2
B 2 249 4390017 18634.78 1102 1061 235.5
B 3 238 197892 835.71 1102 1061 235.5
B 6 255 197549 834.26 1102 1061 235.5
C 15 219 23545250 214491.66 397 393 109.8
C 12 252 220674 2006.74 397 393 109.8
C 14 254 74357 673.81 397 393 109.8
D 11 129 1122876 3473.87 1127 1078 322.9
D 12 110 909274 2812.41 1127 1078 322.9
D 8 160 388691 1200.32 1127 1078 322.9

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