ASTROSAT CZTI

Data Quality Report

Orbit 58542

Creation date: 2026-07-24T13:46:12.768333
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_044T04_9000006592_58542cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58542cztM0_level2_quad_clean.evt
Size (bytes)442,382,40099,924,480
Size421.9 MB 95.3 MB
Events in quadrant A4,227,318658,193
Events in quadrant B4,039,743696,271
Events in quadrant C3,483,689631,868
Events in quadrant D4,118,268584,154

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169332
B0164563
C0149352
D0166952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65211061.625518%
B65202894.432515%
C6520781.196319%
D65211271.947554%

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 8966 6523 32 32 0.36% 0.49%
B 8965 6522 95 95 1.06% 1.46%
C 8965 6522 53 53 0.59% 0.81%
D 8966 6523 124 124 1.38% 1.90%

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 12 114 643322 3485.96 741 721 184.3
A 3 14 569622 3086.15 741 721 184.3
A 10 17 45405 242.4 741 721 184.3
B 0 186 399199 2550.21 733 705 156.3
B 0 171 279455 1783.89 733 705 156.3
B 8 234 153421 977.32 733 705 156.3
C 4 5 287015 1438.69 719 714 199.0
C 12 252 160499 802.93 719 714 199.0
C 6 223 86485 431.01 719 714 199.0
D 3 12 298759 1467.41 708 674 203.1
D 2 249 265048 1301.46 708 674 203.1
D 2 153 181924 892.26 708 674 203.1

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