ASTROSAT CZTI

Data Quality Report

Orbit 52497

Creation date: 2025-06-25T14:58:07.928213
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/AS1A13_037T01_9000006476_52497cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52497cztM0_level2_quad_clean.evt
Size (bytes)365,497,92050,293,440
Size348.6 MB 48.0 MB
Events in quadrant A1,600,704358,816
Events in quadrant B2,687,902360,545
Events in quadrant C2,936,537326,261
Events in quadrant D6,021,890219,964

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140615796848680140612934303790
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085771040
B0123821843
C0133612168
D0245854252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0859
B0859
C08412
D0844

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A371840.107585%
B36372727.478691%
C36161283.539823%
D3512109831.264237%

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 7811 3904 5 5 0.06% 0.13%
B 7811 3833 259 259 3.32% 6.76%
C 7811 3819 153 153 1.96% 4.01%
D 7811 3725 1205 1205 15.43% 32.35%

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 3 14 74967 780.46 377 367 95.6
A 4 3 16743 171.33 377 367 95.6
A 11 3 14002 142.65 377 367 95.6
B 10 44 1083104 13723.07 359 347 78.9
B 10 254 54740 689.39 359 347 78.9
B 0 213 39599 497.49 359 347 78.9
C 15 224 630684 6294.25 355 351 100.1
C 15 248 433780 4328.05 355 351 100.1
C 13 3 230728 2300.45 355 351 100.1
D 15 93 2401615 27423.01 305 292 87.6
D 6 42 2093644 23905.99 305 292 87.6
D 8 176 110834 1262.38 305 292 87.6

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