ASTROSAT CZTI

Data Quality Report

Orbit 20210306_A10_102T11_9000004230_level2

Creation date: 2025-12-22T14:45:34.919193
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/AS1A10_102T11_9000004230cztM0_level2.fits modeM0/AS1A10_102T11_9000004230cztM0_level2_quad_clean.evt
Size (bytes)788,267,520625,547,520
Size751.8 MB 596.6 MB
Events in quadrant A4,987,3723,614,260
Events in quadrant B4,746,6743,636,494
Events in quadrant C4,560,0503,160,361
Events in quadrant D3,969,8042,932,643

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016640
B016640
C016640
D016640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01747670
B01891990
C02754040
D03076900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8164713391.639987%
B8164725803.159945%
C816471077713.199505%
D816471231215.079550%

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 93452 81646 0 0 0.00% 0.00%
B 93452 81638 0 0 0.00% 0.00%
C 93452 81631 0 0 0.00% 0.00%
D 93452 81569 0 0 0.00% 0.00%

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 0 29 4221 9.5 1299 1221 315.7
A 7 110 3925 8.57 1299 1221 315.7
A 9 19 3723 7.93 1299 1221 315.7
B 2 9 3869 11.06 1251 1195 241.7
B 2 8 3176 8.2 1251 1195 241.7
B 3 17 3153 8.1 1251 1195 241.7
C 1 80 3566 8.0 1204 1127 304.8
C 1 81 3502 7.79 1204 1127 304.8
C 12 241 3210 6.83 1204 1127 304.8
D 3 14 2958 6.41 1133 1032 300.6
D 15 46 2926 6.3 1133 1032 300.6
D 10 189 2834 5.99 1133 1032 300.6

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