ASTROSAT CZTI

Data Quality Report

Orbit 51960

Creation date: 2025-05-07T05:36:01.036498
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/AS1C09_011T06_9000006468_51960cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51960cztM0_level2_quad_clean.evt
Size (bytes)930,934,08078,082,560
Size887.8 MB 74.5 MB
Events in quadrant A10,788,615374,368
Events in quadrant B5,004,032646,807
Events in quadrant C9,461,676444,179
Events in quadrant D8,708,017448,414

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0364992
B0193042
C0326738
D0303222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6451294845.698341%
B64515077.859247%
C6450219834.077519%
D6450165825.705426%

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 7636 6452 2312 2312 30.28% 35.83%
B 7636 6452 319 319 4.18% 4.94%
C 7635 6450 1698 1698 22.24% 26.33%
D 7635 6451 1506 1506 19.72% 23.35%

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 4 159 4202700 31429.61 526 512 133.7
A 7 64 2009591 15026.59 526 512 133.7
A 4 95 1395771 10435.62 526 512 133.7
B 5 185 959303 6892.95 661 640 139.1
B 10 41 323189 2319.18 661 640 139.1
B 10 44 169126 1211.44 661 640 139.1
C 15 224 5752290 35998.75 569 563 159.8
C 13 3 339990 2124.4 569 563 159.8
C 4 5 241780 1509.72 569 563 159.8
D 6 42 1821428 10928.52 581 555 166.6
D 2 172 1348732 8091.49 581 555 166.6
D 0 5 829610 4975.83 581 555 166.6

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