ASTROSAT CZTI

Data Quality Report

Orbit 39725

Creation date: 2024-06-27T22:08:15.810278
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/AS1A12_022T01_9000005494_39725cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39725cztM0_level2_quad_clean.evt
Size (bytes)398,908,80087,842,880
Size380.4 MB 83.8 MB
Events in quadrant A3,541,958576,445
Events in quadrant B3,240,308614,561
Events in quadrant C3,396,772590,099
Events in quadrant D4,176,925509,587

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139793
B0132512
C0135322
D0160712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52763396.425322%
B52761041.971190%
C5276881.667930%
D52764959.382108%

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 7038 5277 257 257 3.65% 4.87%
B 7038 5277 50 50 0.71% 0.95%
C 7038 5277 67 67 0.95% 1.27%
D 7038 5277 435 435 6.18% 8.24%

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 15 174 696237 6108.63 562 552 113.9
A 10 83 441811 3874.58 562 552 113.9
A 13 248 222299 1947.1 562 552 113.9
B 5 172 845043 7537.58 576 560 112.0
B 5 255 47231 416.57 576 560 112.0
B 4 67 30010 262.86 576 560 112.0
C 9 187 511780 3840.18 569 572 133.1
C 15 208 410464 3079.1 569 572 133.1
C 15 214 218996 1640.79 569 572 133.1
D 12 227 1268671 9536.47 540 525 133.0
D 2 250 259618 1948.38 540 525 133.0
D 12 233 199147 1493.64 540 525 133.0

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