ASTROSAT CZTI

Data Quality Report

Orbit 57653

Creation date: 2026-05-25T11:24:47.885906
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_125T09_9000006578_57653cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57653cztM0_level2_quad_clean.evt
Size (bytes)487,776,960107,340,480
Size465.2 MB 102.4 MB
Events in quadrant A3,117,924717,664
Events in quadrant B3,467,565774,206
Events in quadrant C5,860,440648,949
Events in quadrant D5,056,003613,494

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145712
B0152653
C0222962
D0198062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7130480.673212%
B7129881.234395%
C71295547.771076%
D71304265.974755%

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 9305 7130 0 0 0.00% 0.00%
B 9304 7131 10 10 0.11% 0.14%
C 9304 7131 427 427 4.59% 5.99%
D 9305 7132 349 349 3.75% 4.89%

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 13 248 31397 156.23 793 772 196.0
A 3 137 9426 44.15 793 772 196.0
A 13 254 8804 40.97 793 772 196.0
B 10 247 202079 1203.61 784 753 167.3
B 10 16 32157 187.74 784 753 167.3
B 4 201 24040 139.22 784 753 167.3
C 15 224 2474140 12094.19 755 747 204.5
C 6 13 245931 1198.88 755 747 204.5
C 14 254 129715 630.61 755 747 204.5
D 8 240 1227721 5802.42 748 715 211.5
D 3 12 199654 940.77 748 715 211.5
D 8 160 133782 629.26 748 715 211.5

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