ASTROSAT CZTI

Data Quality Report

Orbit 52077

Creation date: 2025-05-15T02:50:48.850984
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_011T07_9000006470_52077cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52077cztM0_level2_quad_clean.evt
Size (bytes)896,192,64069,379,200
Size854.7 MB 66.2 MB
Events in quadrant A4,219,501549,549
Events in quadrant B4,510,946613,213
Events in quadrant C9,094,395410,107
Events in quadrant D14,881,460104,237

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166021
B0176791
C0311992
D0482631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60515008.263097%
B60523485.750165%
C6051219536.274996%
D6051508183.969592%

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 7221 6052 423 423 5.86% 6.99%
B 7222 6052 257 257 3.56% 4.25%
C 7220 6050 1987 1987 27.52% 32.84%
D 7220 6050 5035 5035 69.74% 83.22%

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 95 1178456 7848.19 601 587 150.1
A 6 196 162561 1079.24 601 587 150.1
A 4 3 114249 757.33 601 587 150.1
B 10 128 696883 5259.7 625 604 132.4
B 5 185 507718 3830.75 625 604 132.4
B 5 172 233942 1762.64 625 604 132.4
C 15 224 5567334 38086.23 523 518 146.2
C 12 252 351759 2403.07 523 518 146.2
C 5 80 225124 1536.68 523 518 146.2
D 15 94 10402680 124127.64 285 271 83.8
D 6 42 2106568 25133.57 285 271 83.8
D 3 12 565902 6749.44 285 271 83.8

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