ASTROSAT CZTI

Data Quality Report

Orbit 53511

Creation date: 2025-08-19T15:20:36.418222
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_002T07_9000006498_53511cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53511cztM0_level2_quad_clean.evt
Size (bytes)756,233,28078,220,800
Size721.2 MB 74.6 MB
Events in quadrant A10,685,513379,996
Events in quadrant B3,343,482650,204
Events in quadrant C10,111,213375,561
Events in quadrant D3,374,439530,668

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360341
B0141572
C0343641
D0144141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6184274044.307891%
B6183921.487951%
C6183246039.786511%
D61831242.005499%

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 7199 6185 2277 2277 31.63% 36.81%
B 7198 6184 25 25 0.35% 0.40%
C 7197 6183 2108 2108 29.29% 34.09%
D 7198 6184 90 90 1.25% 1.46%

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 62 5808054 42010.01 560 546 138.2
A 3 63 2087745 15098.26 560 546 138.2
A 15 174 545249 3940.24 560 546 138.2
B 10 254 202861 1408.81 668 643 143.5
B 7 252 120145 832.55 668 643 143.5
B 10 28 75247 519.75 668 643 143.5
C 7 64 6179397 42159.81 531 526 146.6
C 12 254 517047 3524.34 531 526 146.6
C 15 224 371146 2528.82 531 526 146.6
D 2 16 158530 853.38 648 618 185.0
D 1 0 149873 806.6 648 618 185.0
D 2 153 147161 791.94 648 618 185.0

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